Flip a coin 25 times and keep track of the results. What is the experimental probability of landing on tails? What is the theoretical probability of landing on heads or tails?

Answer:

The answer to your question is Jay will receive $1.07 and Kay will receive $0.93.

Step-by-step explanation:

Data

Jay brought 2 gallons

Kay brought 1.75 gallons

Money = $2

Process

1.- Calculate the total amount of water

Water = 2 + 1.75

          = 3.75 gallons

2.- Calculate the money Jay will receive using proportions

               3.75 gallons ---------------- $2.00

               2      gallons  ---------------  x

               x = (2 x 2) / 3.75

               x = 4/3.75

               x = $1.07

3.- Calculate the money Kay will receive using proportions

               3.75 gallons ----------------$2.00

               1.75 gallons   --------------- x

               x = (1.75 x 2.00) / 3.75

               x = 3.5/3.75

               x = $0.93

Answer:

8

Step-by-step explanation:

Given that in a sample of n = 6 scores, the smallest score is X = 3, the largest score is X = 10

Mean = 6

Since mean = 6 we get sum of all the 6 scores = [tex]6(6) = 36[/tex]

Now  II part says 10 is changed to 20

i.e. original sum = 36

Changed value  = 10

Adjusted value =26

Add: new value  =22

New sum            =48

So we have sum = 48

New mean= [tex]\frac{48}{6} =8[/tex]

(This can also be done using the formula

old mean + positive change in one score/6)

Final Answer:

The new mean after changing the largest score from 10 to 22 is 8.

Explanation:

To solve this problem, we will follow these steps:
1. Calculate the total sum of all scores using the original mean.
2. Subtract the original largest score from the total sum.
3. Add the new largest score to the total sum to get the new total sum.
4. Calculate the new mean by dividing the new total sum by the sample size.

Let's go through these steps one by one:
Step 1: Calculate the original total sum of scores.
Given that the mean (M) is 6 for a sample size (n) of 6:
Total sum of scores (original) = Mean × Sample size = M × n = 6 × 6 = 36

Step 2: Subtract the original largest score from the total sum.
Original total sum = 36 (from Step 1)
Original largest score = 10
Total sum after removing the original largest score = 36 - 10 = 26

Step 3: Add the new largest score to the total sum to get the new total sum.
Total sum after removing the original largest score = 26 (from Step 2)
New largest score = 22
New total sum of scores = 26 + 22 = 48

Step 4: Calculate the new mean.
New total sum of scores = 48 (from Step 3)
Sample size (n) = 6
New mean = New total sum of scores ÷ Sample size = 48 ÷ 6 = 8

Therefore, the new mean after changing the largest score from 10 to 22 is 8.

Answer: 15

Step-by-step explanation:

Answer:

he have to kep cutting them until he find out he answer

Step-by-step explanation:

Answer:

22.5

Step-by-step explanation:

All of the angles inside the triangle equals 180. Therefore, the equation is x+2x+5x=180. Then, you solve for x. The final equation should look like 8x=180 And that is how we get 22.5

Answer:

22.5

Step-by-step explanation:

The sum of the interior angles in a triangle is 180 degrees, so we have the equation $x+2x+5x=180$, so $x=\boxed{22.5}$.

Option C: [tex]5 x(4 x+7)(3 x+2)[/tex] is the possible expressions for length, width and height of the prism.

Explanation:

The volume of the rectangular prism is [tex]60 x^{3}+145 x^{2}+70 x[/tex]

To determine the length, width and height of the rectangular prism, let us factor the expression.

Thus, factoring 5x from the expression, we have,

[tex]5 x\left(12 x^{2}+29 x+14\right)[/tex]

Let us break the expression [tex]12 x^{2}+29 x+14[/tex] into two groups, we get,

[tex]5x[\left(12 x^{2}+8 x\right)+(21 x+14)][/tex]

Factoring 4x from the term [tex]12 x^{2}+8 x[/tex] , we get,

[tex]5x[4 x(3 x+2)+(21x+14)][/tex]

Similarly, factoring 7x from the term [tex]21 x+14[/tex] , we get,

[tex]5x[4 x(3 x+2)+7(3x+2)][/tex]

Now, let us factor out [tex]3x+2[/tex], we get,

[tex]5 x(4 x+7)(3 x+2)[/tex]

Hence, the possible expressions for length, width and height of the prism is [tex]5 x(4 x+7)(3 x+2)[/tex]

Therefore, Option C is the correct answer.

Answer:

457 sand dollars

Step-by-step explanation:

Let the number=x

The number she has collected is greater than 400 and less than 460

400<x<460

The number in hundreds place is one less than the number in the tens place.

The number in the Hundreds place is 4. Since it is one less, our number for now will be of the form 45* where * is the ones digit.

Also, the number in the ones place is two more than the number in the tens place.

The number in the tens place is 5. If it is two more than 5, the number in the ones place is 7.

Therefore Chelsea has collected 457 sand dollars

Answer:

0.02 or 2% = Beta

Step-by-step explanation:

Given that,

Risk-free rate = 7 percent

Expected return on the market = 10 percent

Expected return on Security J = 13 percent

Therefore, the beta of Security J is calculated as follows;

Expected return on Security J = Risk-free rate + Beta (Expected return on the market - Risk-free rate)

13 percent = 7 percent + Beta (10 percent - 7 percent)

0.13 - 0.07 = 0.03 Beta

0.06 = 0.03 Beta

0.06 ÷ 0.03 = Beta

0.02 or 2% = Beta

Answer:

Cumulative frequency distribution

Step-by-step explanation:

Cumulative frequency distribution is a form of a frequency distribution that represents the sum of a class and all classes below it. Remember that frequency distribution is an overview of all distinct values (or classes of values) and their respective number of occurrences.

Final answer:

Placing in the 99th percentile means a student did better than 99% of test takers, akin to scoring beyond the second standard deviation, a high achievement.

Explanation:

If a student places in the 99th percentile on an exam, this indicates that her performance was better than 99% of all students who completed the exam. Her achievement is akin to being beyond the second standard deviation in the context of a normal distribution, showing an exceptional score. In the given context, this means she likely scored higher than what is considered the range for the majority of her peers.

Being in the 90th percentile would indicate that 90 percent of test scores were at or below that mark, a clear demonstration of high achievement compared to peers. In educational measurement, the choice between absolute rating and relative ranking can greatly affect the evaluation of student performance. With relative ranking, a student's performance is compared against that of their peers, such as being in the top 10% as opposed to achieving a specific score percentage, which would be an absolute rating.

Answer:

  always true

Step-by-step explanation:

Adding 4-b to both sides of the equation gives ...

  ax = 4

Then dividing by "a" gives ...

  x = 4/a

This is always true when a≠0.

Answer:

2/7

Step-by-step explanation:

To find the this first you need the total number of marbles minus one since the blue marble was taken.

4+5+6-1=14

after one blue marble being picked there are 4 blue left, so the fraction is

4/14 and after being simplified it is 2/7

Answer:

the true is the answer is g

Step-by-step explanation:

To increase the likelihood of selecting a yellow marble Andrew should:

-Add more yellow marbles to the bag

-Remove from the bag 1 green, 1 black, and 2 red marbles

-Triple the number of yellow marbles in the bag

Answer:

B,C,E

Step-by-step explanation:

just did it

Option A: [tex]-2500[/tex] is the value of [tex]S_{25[/tex]

Explanation:

It is given that the first term is [tex]a_1=20[/tex]

The common difference is [tex]d=-10[/tex]

We need to determine the sum of 25 terms.

The sum of  terms of an arithmetic series can be determined using the formula, [tex]S_n=\frac{n[2a_1+(n-1)d]}{2}[/tex]

Substituting [tex]n=25[/tex] , [tex]a_1=20[/tex] and [tex]d=-10[/tex]

Thus, we have,

[tex]S_{25}=\frac{25[2(20)+(25-1)(-10)]}{2}[/tex]

Simplifying the values, we get,

[tex]S_{25}=\frac{25[40+(24)(-10)]}{2}[/tex]

[tex]S_{25}=\frac{25[40-240]}{2}[/tex]

Subtracting the terms within the bracket, we get,

[tex]S_{25}=\frac{25[-200]}{2}[/tex]

Multiplying the terms in the numerator, we have,

[tex]S_{25}=\frac{-5000}{2}[/tex]

Dividing, we get,

[tex]S_{25}=-2500[/tex]

Thus, the sum of the 25 terms is [tex]-2500[/tex]

Therefore, Option A is the correct answer.

Answer:

-2500 answer

Step-by-step explanation:

Answer: the number of hpurs that Fran can watch this week is lesser than 12

Step-by-step explanation:

Let x represent the number of hours of television that Fran can watch in a week.

Fran is limited to watching television less than 12.6 hours per week. She has already watched 4.2 hours, and each show is 0.7 of an hour long. The inequality representing the situation is expressed as

0.7x + 4.2 < 12.6

0.7x + 4.2 < 12.6 - 4.2

0.7x < 8.4

x < 8.4/0.7

x < 12

Answer:

12

Step-by-step explanation:

Fran has wached 4.2 hours of tv out of 12.6, if the equasion is curect that means that she has wached 6 shows already.

From here there is two ways to do his one is to look at how meny shows she can watch in 12.6 hours and subtract how meny shows she has wached from it  and then convert back to desimals.

The other way to do this( the better way) is to do 12.6-4.2=8.4 then do 8.4 / .7 and you would get 12

Answer:

Step-by-step explanation:

Let x represent the length of fence parallel to the house. Then the length perpendicular is ...

  y = (120 -x)/2

The area of the yard is the product of these dimensions, so is ...

  A = xy = x(120-x)/2

This is the equation of a parabola that opens downward and has zeros at x=0 and x=120. The maximum (vertex) is on the line of symmetry, halfway between these zeros, at x=60.

The fence parallel to the house is 60 feet.

The fence perpendicular to the house is (120-60)/2 = 30 feet.

The area of the yard is (60 ft)(30 ft) = 1800 ft^2.

Answer:

D. The standard deviation is known and n > 30.

Step-by-step explanation:

A two-population z test should be used when the standard deviation is known and the sample size is greater than 30.

The circumstances under which you should use a two-population z test are:

https://brainly.com/question/32498061

#SPJ2

Answer:

2

Step-by-step explanation:

Answer: 2.)a1 =-3, d = 7, an = 7n - 10

Step-by-step explanation:

In an arithmetic sequence, consecutive terms differ by a common difference.

The formula for determining the nth term of an arithmetic sequence is expressed as

an = a1 + d(n - 1)

Where

a represents the first term of the sequence.

d represents the common difference.

n represents the number of terms in the sequence.

From the information given,

a1 = - 3

d = 4 - - 3 = 11 - 4 = 18 - 11 = 25 - 18 = 7

Therefore, the Explicit Rule for this arithmetic sequence is

an = - 3 + 7(n - 1)

an = - 3 + 7n - 7

an = 7n - 7 - 3

an = 7n - 10

Answer:

$327.25

Step-by-step explanation:

$435 - $50 = 385

15% = 15/100 = 0.15

$385 * 0.15 = 57.75

$385 - $57.75 = $327.25

The price, in dollars, of a $435 dollar refrigerator after both discounts is $327.25.

= $435 - $50

= 385

Since there is 15% discount

So here we have to do 15% discount of $385

i.e.

= $385 - 15% of $385

= $385 - $57.75

= $327.25

Learn more: https://brainly.com/question/25914450?referrer=searchResults

Answer:

E. 80

Step-by-step explanation:

First consider exactly what the problem is asking. You have to make a dinner and AT LEAST one of the dishes has to be vegetarian. So then we could have all three be vegetarian (V V V), 2 vegetarian with one meat (V V M), or one vegetarian with 2 meat (V M M). If I can find the number of arrangements possible for each of the possibilities and add them, we should have our answer.

Consider first the all vegetarian option. There are 5 vegetarian meals on the menu and we may choose 3 of them. This will be a combination since the order in which we choose doesn't matter. For example if my 5 vegetarian dishes are salad, hummus, rice, lentils and pasta, it doesn't matter what order I serve them in, since they will all be a part of the meal. Simply put, placing hummus, rice, and lentils on the table is the same as placing rice, lentils and hummus on the table if everybody shares the dishes. If I had specific guests assigned to the each dish then the order would matter, and it would be a permutation. For example if three of Jane's guests, (lets say Mike, Frank, and Bob) are going to have a specific dish, then the arrangement where Mike has rice, Bob has lentils, and Frank has pasta is different from the arrangement where Mike has lentils, Bob has rice, and Frank has pasta. Since there is no mention of a specific order this has to go in, it is safe to assume a combination. So how many ways can we choose 3 vegetarian dishes from 5 options? This will be 5 C 3.

So we found that (V V V) gives us 5 C 3, so lets examine the other remaining cases. (V V M) implies from 5 vegetarian options we can choose 2 and from 4 meat options we choose one. Then (V V M) gives us 5 C 2 * 4 C 1. Likewise for (V M M) we can say 5 C 1 * 4 C 2.

Putting it all together we have 5 C 3 + 5 C 2 * 4 C 1 + 5 C 1 * 4 C 2. 10 + 10*4 +5 *6 =80.

Answer:

Vera used the wrong number in her inequality.

Step-by-step explanation:

Inequalities are graphed to present a clearer picture of their behavior

To graph an inequality, the following are required steps

(1) Locate the indicated number on the other side of the  inequality sign variable x in the inequality equation (in this case we have 78.9999 ≥ x)

(2) Draw a number line and place an open or shaded circle around around the number specified in the inequality equation depending on whether the variable is also equal to the number

(3) Shade the possible numbers of the variable

In this case Vera used 78.999 in the equation and 79 on the graph

Answer:

Vera used the wrong number in her inequality.

Step-by-step explanation:

Vera graphed the inequality -78.9999 ≥ x. However, she plotted the point at -79, not -78.9999. Thus, we can tell the answer is Vera used the wrong number in her inequality.

Hope this helps! I got it right on E d g e n u i t y. Plz give me brainliest, it will help me achieve my next rank.

Area of the largest circle fit in the fire pit is 4069.44 square inches.

Solution:

Length of the rectangular pit = 7 feet

Width of the rectangular pit = 6 feet

The diameter of a largest circle inscribed in a rectangle is equal to the smaller side of the rectangle.

Diameter of the largest circle = 6 feet

Radius of the largest circle = 3 feet

Area of the circle = πr²

                             = 3.14 × 3²

Area of the circle = 28.26 square feet

Let us convert square feet into square inches.

1 square feet = 144 square inches

28.26 square feet = 28.26 × 144

                              = 4069.44 square inches

Area of the largest circle fit in the fire pit is 4069.44 square inches.

Answer:

L = 2*√2

w = √2

Step-by-step explanation:

Given:

A rectangle is constructed with its base on the diameter of a semicircle with radius 2 and with its two other vertices on the semicircle.

Find:

What are the dimensions of the rectangle with maximum​ area?

Solution:

- Let the length and width of the rectangle be L and w respectively.

- We know that Length L lie on the diameter base. So , L < 4 and the width w is less than 2 . w < 2.

- Using the Pythagorean Theorem, we relate the L with w using the radius r = 2 of the semicircle.

                           r^2 = (L/2)^2 + (w)^2

                           sqrt (4 - w^2 ) = L / 2

                           L = 2*sqrt (4 - w^2 )           L < 4 , w < 2

- The relation derived above is the constraint equation and the function is Area A which is function of both L and w as follows:

                          A ( L , w ) = L*w

- We substitute the constraint into our function A:

                          A ( w ) = 2*w*sqrt (4 - w^2 )

- Now we will find the critical points for width w for which A'(w) = 0

                         A'(w) = 2*sqrt (4 - w^2 ) - 2*w^2 / sqrt (4 - w^2 )  

                         0 = [2*sqrt (4 - w^2 )*sqrt (4 - w^2 )   - 2*w^2] / sqrt (4 - w^2 )  

                         0 = 2*(4 - w^2 )   - 2*w^2

                         0 = -4*w^2 + 8

                         8/4 = w^2

                         w = + sqrt ( 2 )   ..... 0 < w < 2

- From constraint equation we have:

                          L = 2*sqrt (4 - 2 )

                          L = 2*sqrt(2)

Answer:

non sampling error

Step-by-step explanation:

Sampling error in a statistical analysis arising from the unrepresentativeness of the  sample taken.

Non Sampling error is a term used in statistics that refers to an error that occurs during data collection, causing the data to differ from the true values.

Answer:

sampling error

Step-by-step explanation:

Answer:

53 by the fact NFL players use a for wheeler u Dan je e eka a f wjd r

Answer:

E(X) = 0.64

Sd(X) = 0.933

Step-by-step explanation:

3(0.07) + 2(0.11) + 1(0.21)

E(X²) = 3²(0.07) + 2²(0.11) + 1²(0.21)

= 1.28

Var(X) = 1.28 - 0.64² = 0.8704

Sd = 0.933

Answer:

61 divided by 10 and that should even out how many hours they worked

Step-by-step explanation:

Answer: the equation that can be used to solve for the hourly labor rate is

2x + 10 = 61

Step-by-step explanation:

Let x represent the amount charged by the landscaping company per hour of labour.

The landscaping company charges a $10 fee to make a house call plus an hourly rate for labor. This means that the total charge for y hours is

xy + 10

If the total bill for a job that takes two hours comes to $61.00, the equation that can be used to solve for the hourly labor rate would be

2x + 10 = 61

Answer:

Probability = 0.241

Step-by-step explanation:

We can find the probability that a given class period runs through the given time recognizing that a uniform probability distribution is mostly a rectangle with an area equal to 1.

Therefore,

Probability = 51.7551 - 50.550/53.053 - 48.0480 = 1.2057/5.005

= 0.241

Answer:

The probability of selecting a class that runs between 50.550.5 and 51.7551.75 minutes is 0.24

Step-by-step explanation:

A uniform distribution is a flat distribution that has the same probability density for every number. The area under the graph of the distribution must be 1. Since this distribution runs from 48.048.0 to 53.053.0  minutes,

it has a range of 5.005 (53.053.0 - 48.048.0).

The density must be 1/5.005 ≅ 0.2, so that 5.005*0.2 ≅ 1.0.

To find the probability of being between two numbers multiply the range between the numbers by the probability density.

range:51.7551.75 - 50.550.5 ≅ 1.2

1.2*0.2 = 0.24

P(50.550.5 < x < 51.7551.75) = 0.24

The probability of selecting a class that runs between 50.550.5 and 51.7551.75 minutes is 0.24

Answer:

Step-by-step explanation:

The coefficient of determination = [tex]r^{2} = 0.885^{2}[/tex] = 0.7832

It means about 78% variation in waist size of males can be explained by their weight and about 23% can not be explained.

Answer:

The conditional probability that I get four heads given I pulled out the weighted coin = 0.2401

Step-by-step explanation:

Probability of getting 4 heads from 4 trials for a fair coin = 0.5⁴

But given that it is the weighted coin that is pulled out,

The probability of getting 4 heads from 4 trials = 0.7⁴ = 0 2401

Answer:

C) None

Step-by-step explanation:

|k - 3| + 2 = 1

|k - 3| = -1

Which is not possible because a mod can never be negative

Final answer:

There are zero values of k that make the equation |k - 3| + 2 = 1 true because the absolute value of any number cannot be negative.

Explanation:

To determine for how many values of k the equation |k - 3| + 2 = 1 is true, we need to consider what the absolute value represents. The absolute value of a number is its distance from 0 on the number line, regardless of direction.

Thus, |k - 3| represents the distance of k from 3.

First, we simplify the equation by subtracting 2 from both sides:

|k - 3| = -1

Since the absolute value of a number is always non-negative, there can be no real number k that would make |k - 3| equal to -1.

Therefore, there are zero values of k that would satisfy the original equation.

Answer:

6) x = 17 ft

7) 42 in

Step-by-step explanation:

6) length of the tangents are equal.

2x - 7 = 27

2x = 34

x = 17

7) if you draw a line from T passing through the centre of the circle, it will divide the triangle into two congruent triangles

Perimeter = 2(5+7+9) = 42 in