An article reports that blue eyed people earn less than brown eyed people, with these numbers: average blue-eyed salary $35,000, average brown-eyed salary $37,000, p-value 0.45. Based on that reported p-value, and using the common definition of "statistical significance," which is the case?
a. The results are nowhere near to being statistically significant.
b. The results are almost but not quite statistically significant.
c.The results are just barely statistically significant.
d.The results are strongly statistically significant.
A group of 10 people is choosing a chairperson and vice-chairperson. They put all 10 people's names into a hat. The first name drawn becomes chair. The second name drawn becomes vice-chair. How many possible combinations of chair and vice-chair are there?
a.19
b.90
c.100
d.10! (10 factorial)
Answer:
a.
Step-by-step explanation:
A p-value less than 0.05 (typically ≤ 0.05) is statistically significant. It indicates strong evidence against the null hypothesis, as there is less than a 5% probability the null is correct (and the results are random). Therefore, we reject the null hypothesis, and accept the alternative hypothesis.
------------------------
First question:
The first question involves the test of an hypothesis.
Tests have significance levels, which normally are either 0.01, 0.05 or 0.1. If the p-value is less than the significance level, the results are significant, while if they are more, the results are not significant.
In this question, the p-value is 0.45, which is considerably more than any significance level, meaning that the results are nowhere near to being statistically significant, and the correct option is:
a. The results are nowhere near to being statistically significant.
A similar problem can be found at https://brainly.com/question/22968227
------------------------
Second question:
The order in which the people are chosen is important, as the first and second person chosen have different roles, and thus, the permutations formula is used.
Permutations formula:
The number of possible permutations of x elements from a set of n elements is given by the following formula:
[tex]P_{(n,x)} = \frac{n!}{(n-x)!}[/tex]
In this problem, there are 2 people from a set of 10, so:
[tex]P_{10,2} = \frac{10!}{8!} = 10\times9 = 90[/tex]
90 possible combinations, option b.
A similar problem can be found at https://brainly.com/question/24245547
There are 8 male teachers and 5 female teachers who teach English in the school. What is the ratio of the number of male teachers to the number of female teachers?
Answer:
8:5
Step-by-step explanation:
Given there are 8 male teachers and 5 female teachers,The ratio of number of male teachers to female teachers
= no. Of male teachers/no. Of female teachers
That’s
8/5
8:5
8:5 = 160%
theres not really an explanation to this hope it helps :)
WILL GIVE BRAINLIEST!!!
Jack wants to determine the best-selling CD in his town. He surveys 30 shoppers as they leave the mall. What type of sampling is this?
Which of the following are possible equations of a parabola that has no real solutions and opens downward?
y>= -(x+4)^2 - 2
y>= -(x+4)^2 + 2
y>= -x2-2
y>=(x-4)^2 + 2
y>= -(x-4)^2 - 2
Answer:
[tex]y = - {(x - 4)}^{2} - 2[/tex]
[tex]y = - {(x + 4)}^{2} - 2[/tex]
Step-by-step explanation:
The vertex form of a parabola is given as
[tex]y = a {(x - h)}^{2} + k[/tex]
If this parabola opens downward, then a<0.
This means for a function opening downward not to have a solution, the k value must also be negative and taking a square root of a negative number will not give real solution.
From the given options, examples of such functions are:
[tex]y = - {(x + 4)}^{2} - 2[/tex]
and
[tex]y = - {(x - 4)}^{2} - 2[/tex]
Answer:it’s y>=-(x+4)^2-2
Step-by-step explanation:
I checked it in my graphing calculator and it works. I’m also doing the program sooo
5x-6=10-3x solve for x
Answer:
x = 2
Step-by-step explanation:
Start by combining like terms.
Collecting x terms onto the left side results in 8x;
collecting constants onto the right side results in 16.
Therefore, 8x = 16, and x = 2
Which of the following expressions is equivalent to that expression?
A.(n+4)^5
B.(n+4)^1/5
C.(n+4)^5/3
D.(n+4)^3/5
Option D:
[tex](n+4)^{\frac{3}{5}}[/tex] is the equivalent expression for [tex]\sqrt[5]{(n+4)^{3}}[/tex].
Solution:
Given expression:
[tex]\sqrt[5]{(n+4)^{3}}[/tex]
To find the equivalent expression for the given expression.
[tex]\sqrt[5]{(n+4)^{3}}[/tex]
Using radical rule: [tex]$\sqrt[m]{a}=a^{\frac{1}{m}}[/tex]
[tex]$=\left((n+4)^{3}\right)^{\frac{1}{5}}[/tex]
Using exponent rule: [tex]$\left(a^{b}\right)^{c}=a^{b c}[/tex]
[tex]$=(n+4)^{3 \cdot \frac{1}{5}}[/tex]
[tex]$=(n+4)^{\frac{3}{5}}[/tex]
[tex]\sqrt[5]{(n+4)^{3}}=(n+4)^{\frac{3}{5}}[/tex]
Hence [tex](n+4)^{\frac{3}{5}}[/tex] is the equivalent expression for [tex]\sqrt[5]{(n+4)^{3}}[/tex].
Option D is the correct answer.
Round 721295.198715 to the nearest ten.
To round 721295.198715 to the nearest ten, we increase the tens place from 9 to 0 due to the ones place being 5, resulting in 721300.
Explanation:To round the number 721295.198715 to the nearest ten, we should look at the digit in the ones place, which is 5. Since the ones digit is 5 or greater, we need to round up the tens place.
Therefore, the tens digit increases by one from 9 to 0, and all digits to the right of the tens place become zero.
Thus, 721295 rounds up to 721300 when rounded to the nearest ten.
Note that we ignore the decimal and its subsequent numbers because they do not influence the rounding of a number to the nearest ten.
1. Point is on the line . Find the measure of angle .
Answer:
180°
Step-by-step explanation:
Answer:180
Step-by-step explanation:
Write expression in simplest form (-11/2x+3)-2(-11/4x-5/2)=
Answer:
8
Step-by-step explanation:
-11/2x + 3 -2(-11/4x -5/2)
-11/2x + 3 + 11/2x + 5 use the distributive property
-11/2x + 11/2x + 8 combine 3 and 5
8 subtract the x
the answer is 8
9. Lula bought new furniture on her credit card for $993. If she pays it off in 6 months there will be no interest on her purchase. How much will her payments be if evenly distributed over 6 months?
Answer:
$165.50 dollars
Step-by-step explanation:
$993 / 6 = $165.50
Lula will need to pay $165.50 each month for 6 months to pay off her $993 furniture purchase without interest.
Lula purchased furniture on her credit card and plans to make payments over a period of 6 months with no interest charged. To calculate the monthly payment amount, you would divide the total cost of the furniture by the number of months over which she plans to pay.
The formula to find out the monthly payment is:
Monthly Payment = Total Cost / Number of Months
So for Lula, it looks like this:
Monthly Payment = $993 / 6
Monthly Payment = $165.50
Therefore, if Lula pays $165.50 each month, she will have the furniture paid off in 6 months without incurring any interest.
Find the value of x.
Answer:
x = 8
Step-by-step explanation:
Two secants drawn from an external point to the circle.
The (outside ) × (whole) of one secant is equal to the (outside) × (whole) of the other secant, that is
(x + 2)(x + 2 + 2x - 8) = (x + 1)(x + 1 + 2x - 5)
(x + 2)(3x - 6) = (x + 1)(3x - 4) ← expand both sides using FOIL
3x² - 12 = 3x² - x - 4 ( subtract 3x² - x - 4 from both sides )
x - 8 = 0 ( add 8 to both sides )
x = 8
The sides of a triangle are 9,11,13.The largest side of a triangle like this is 39.The other two sides of the second triangle are?
A) 18;22 B)27;33 C)3;11 3 D)48;50
Length of other two sides is 27:33
Option B
Step-by-step explanation:
Here we have , The sides of a triangle are in ratio 9:11:13.The largest side of a triangle like this is 39. Let's calculate other two sides of the second triangle:
[tex]9:11:13[/tex] is the ratio ,largest ratio value is 13 which represents largest side ratio whose length is 39 :
⇒ [tex]13x = 39\\[/tex]
⇒ [tex]x = \frac{39}{13}\\[/tex]
⇒ [tex]x = 3[/tex]
Now, other two sides are 9 x and 11 x
i.e. [tex]9x = 9(3) = 27[/tex]
[tex]11x = 11(3) = 33[/tex]
So, lengths of all the three sides are 27:33:39 . And, Length of other two sides is 27:33`
Emily and her children went into a grocery store and she bought $20.80 worth of bananas and peaches. Each banana costs $0.80 and each peach costs $2.
Answer:
The number of bananas that Emily bought was 6 and the number of peaches that Emily bought was 8
Step-by-step explanation:
The complete question is
Emily and her children went into a grocery store and she bought $20.80 worth of bananas and peaches. Each banana costs $0.80 and each peach costs $2. She bought a total of 14 peaches and bananas altogether. Determine the number of peaches and the number of bananas that Emily bought
Let
x ----> the number of bananas that Emily bought
y ----> the number of peaches that Emily bought
we know that
She bought a total of 14 bananas and peaches altogether
so
[tex]x+y=14[/tex] -----> equation A
She bought $20.80 worth of bananas and peaches
so
[tex]0.80x+2y=20.80[/tex] -----> equation B
Solve the system by graphing
Remember that the solution is the intersection point both graphs
using a graphing tool
The solution is the point (6,8)
see the attached figure
therefore
The number of bananas that Emily bought was 6 and the number of peaches that Emily bought was 8
Rene’s parents have put a half hour daily limit on how long the tv is watched in their house. What is the maximum number of hours that can be watched over 7 days if they stick to the limit?
Answer:
3.5
Step-by-step explanation:
30 · 7 = 210
210 ÷ 60 = 3.5
Need answer for this please
Answer:
Learning about functions vs. new language
Step-by-step explanation:
They both follow strict laws (typically stricter for functions).Practice makes perfect: both can be learned to points of practical perfection.The brain must first attribute meaning or value to elements of either in order to build a learning pattern.What is 0.31111... as a fraction
Answer:
14/45
Step-by-step explanation:
A rope is cut into equal pieces, and 8 of the pieces are used to tie up
packages. The fraction below shows how much of the rope is left over
According to the fraction, into how many pieces was the rope cut?
A. 8
B. 11
C. 3
D. 5
Answer:A
Step-by-step explanation:
8 is the only equal number
Answer:
i believe its 8 :)
Which statement is true of triangles P and Q?
Answer:
The answer is CAnswer:
The answer is C
Step-by-step explanation:
All of the side lengths on the pre-image multiplied by 3 equal out to the side lengths proportional, and the angles are all the same, making them congruent. Please consider giving brainliest.
What is the positive solution to the equation 2x^2+25=73
Step-by-step explanation:
Because 1. x =(5-√73)/4=-0.886and the other one is 2. x =(5+√73)/4= 3.386
Final answer:
The positive solution to the equation 2x² + 25 = 73 is x = √24, which is approximately 4.9.
Explanation:
The student is asking for the positive solution to the equation 2x² + 25 = 73. To solve this, we first isolate the quadratic term by subtracting 25 from both sides of the equation, resulting in 2x² = 48. Then, we divide both sides by 2, simplifying to x² = 24. Taking the square root of both sides gives us two solutions, x = √24 and x = -√24. Since we're seeking the positive solution, we take the positive square root, which yields x = √24 or about 4.9.
The projected value (in millions of dollars) of a large manufacturing company is modeled by the function V(t) = 230(1.12)t, where V(t) is the value of the company t years after 2018. What does 230 represent in the function?
A) The growth factor of the company.
B) The value of the company in 2018.
C) The projected value of the company.
D) The value of the company after t years.
230 is the value of the company in 2018.
Option (B) is correct.
To find 230 represent in the function.
What is arithmetic?science that deals with the addition, subtraction, multiplication, and division of numbers.
It is given that:
The equation of a exponential growth function is equal to
[tex]V(t)=a(1+r)^{t}[/tex]
where,
V(t) is the value of the company
t is the number of years after 2018
a is the initial value or y-intercept
r is the rate of change
Put the value,
a=230
1+r=1.12
r=1.12-1=0.12
r=12%
so 230 is the value of the company when the value of t is equal to zero.
Remember that t is the number of years since 2018
Therefore ,230 is the value of the company in 2018.
Learn more about arithmetic here:
https://brainly.com/question/15196686
#SPJ5
Find the area of the triangle. Round your answer to the nearest thousandths.
A=1/2 bh
Answer:
Step-by-step explanation:
height of triangle=√(11²-8.6²)=√(11+8.6)(11-8.6)=√(19.6×2.4)
=√(4×4.9×4×0.6)=4√(4.9×0.6)=4√2.94
area of triangle=1/2 bh=1/2×2×8.6×4√2.94
=34.4×√2.94
≈58.984
Mrs. Byrne's class went raspberry picking. The data show the weights of the cartoons of raspberries the students picked. Make a tally table and a line plot to show the data. 3/4, 1/4, 2/4, 4/4, 1/4, 1/4, 2/4, 3/4, 3/4
What is the difference in weight between the heaviest carton and lightest carton of rasperries?
Answer:
The difference is 3/4
Step-by-step explanation:
First, you look at the smallest and biggest amount. Then, you subtract! 4/4-1/4=3/4
quadrilateral PQRS is a kite. M
Simplify 5(x - 6).
5x - 30
O-X
5x - 6
Answer:
[tex]5x - 30[/tex]
Step-by-step explanation:
We want to simplify
[tex]5(x - 6)[/tex]
We use the distributive property of real numbers which says that:
[tex]a(b + c) = ab + ac[/tex]
We apply the distributive property to get;
[tex]5(x - 6) = 5 \times x - 5 \times 6[/tex]
This implies that:
[tex]5(x - 6) = 5 x - 30[/tex]
Therefore the correct answer is 5x-30
a number w divided by 5 equals 6
Answer:
w = 30
Step-by-step explanation:
w ÷ 5 = 6
Multiply both sides of the equation by 5
w = 30
Hope this helps :)
Answer:30
Step-by-step explanation:
5 divided by 30 is 6
24x-12-43x-6
Simplify.
Please help!! ASAP!!
Answer:
-30
Step-by-step explanation:
Hope this helps! Brainliest is appriciated.
Answer:
[tex]24x - 12 - 43x - 6 \\ 24x - 43x - 12 - 6 \\ - 19x - 18[/tex]
4.5(32 divided by 8) +12
An item that costs $50.00 is marked 20% off. Sales tax for the item is 8%. What is the final price, including tax? Show your work.
a. solve the problem with the discount applied before the sales tax.
b. solve the problem with the discount applied after the sales tax.
c. compare your answers in parts (a) and (b). Explain
Answer:
$40 ; $43.20
Step-by-step explanation:
a) 50 * (1 - .20) = 50 * .8 = 40
b) 50 * (1 - .20) * (1 + .08) = 43.20
c) The sales tax increases the price from a by 8%
Answer:
a) 40 dollars
b) 43.20 dollars
c) In Part A the instructions tell you to find the 20% in the 50 dollars But in part B it tells you to solve the problem with the discount applied after the sales tax.
Step-by-step explanation:
For the geometric sequence: 112.5, 225, 450, 900,..., find the 21st term.
Answer:
Step-by-step explanation:
The 21st term of the given geometric sequence can be found by using the formula for the n-th term of a geometric sequence: a_n = a_1 * r^(n-1). In this case, it is 112.5 * 2^(21-1).
Explanation:In a geometric sequence, each term after the first is found by multiplying the previous term by a fixed, non-zero number called the common ratio. In this case, 225 divided by 112.5 gives us the common ratio of 2. Therefore, to find the 21st term of the given geometric sequence, we use the formula: a_n = a_1 * r^(n-1). Here, a_n is the n-th term, a_1 is the first term, r is the common ratio and n is the term which we want to find.
So, substituting the given values into the formula, a_21 = 112.5 * 2^(21-1). Calculate this and you'll have the 21st term of the geometric sequence.
Learn more about Geometric sequence here:https://brainly.com/question/33243139
#SPJ2
Select "Yes" or "No" to indicate whether the ordered pair is on the graph of the function f(x)=−16x+1 .