A researcher is interested in the number of hours parents of pre-school children in the United States spend reading to their children. The researcher wanted to test the claim that parents in the US read to their preschool children about 8.5 hours per week the researcher suspects it might be less than 8.5 hours. To investigate this they obtain the student list from a local preschool and uses a random sample of 30 parents of children on the list. Based on the parent's reports they found an average of 8.3 hours per week with a standard deviation of 0.4 hours.

Why is it appropriate to use the normal approximation in this scenario?

A.Because np> or equal to 5 and n(1-p) > or equal to 5

B. Because n> or equal to 30

C. Because the population is skewed

D. Because the sample is not normal

What is the null and alternative hypothesis for this test?

Identify the sample statistics:

A. n=30 x bar=8.5, s=0.4

B. n=30 x bar=8.3,=0.4

C. n=30, x bar=8.3, s=0.4

Find the p-value

A.0.0730

B.0.05

C.-2.74

D.0.003