At what age does trust usually begins to develop?
A. 25 weeks
B. 20 weeks.
C. 10 weeks
D. 15 weeks
Answer:
a. 25 weeks
Explanation:
A recently televised broadcast of a popular television show had a 15 share, meaning that among 5000 monitored households with TV sets in use, 15% of them were tuned to the show. A 0.01 significance level is used to test an advertiser's claim that among the households with TV sets in use, less than 20% were tuned in to the show. Find the P-value.
Answer:
The p-value of the test is approximately 0.
Explanation:
The hypothesis can be defined as:
H₀: The proportion of TV sets tuned in to the show is not less than 20%, p ≥ 0.20.
Hₐ: The proportion of TV sets tuned in to the show is less than 20%, p < 0.20.
Given:
[tex]n=5000\\\hat p=0.15\\\alpha =0.01[/tex]
The test statistic is:
[tex]z=\frac{\hat p-p}{\sqrt{\frac{p(1-p)}{n}} }=\frac{0.15-0.20}{\sqrt{\frac{0.20(1-0.20)}{5000} }}= -8.77[/tex]
The p-value of test is:
[tex]p-value=P(Z<-8.77)\approx0[/tex]
*Use a standard normal table.
Thus, the p-value of the test is approximately 0.
Answer:
The answer is 0.0001.
Explanation:
I promise!
Which of the following contributes to infants developing a sense of basic trust?
A. varied sleep, feeding, and play schedules
B. infant groups of at least four infants per adult caregiver
C. responding to each infants needs individually
D. rotating caregivers to provide diverse and comprehensive care.
Answer:
C
Explanation:
What are the variance (to 2 decimals) and standard deviation (to 4 decimals) for the number of these tweets with no reaction?
during the ___ development stage children are drawing their thoughts instead of merely observations.
A. scribbling
B. circular
C. pre-schematic
D. schematic
Answer:
A. scribbling
Explanation:
- Scribbling stage refers to the first stage in children's art development. At this stage, kid will scribble and manipulate drawing tools just to move their arms around freely, not concerning the appearance of what they make. However, at this stage, there is changes from thinking in terms of motion to imaginative thinking in terms of images.
- Pre-schematic stage is when children starts producing representatives symbols for surrounding objects with visual idea developed.
- Schematic stage is when kids have already developed specific schemas to symbolize objects. This refers to repeated symbol for each object.