Question 11

A researcher wants to construct a 99% confidence interval for the proportion

of people who changed jobs in the past year. What sample size is needed so that the confidence interval will have a margin of error of 0.042 ? 

Write only an integer as your answer.

Question 13

Consider the following hypotheses:

H0: mean = 7 

H1: mean 7

A test is performed with a sample of size 36. The sample mean was 2.50 and the population standard deviation is 18. Assume that the population is approximately normal. Use the TI-84 PLUS calculator to compute the P-value. 

Round your answer to four decimal places (for example: 0.0138). Write only a number as your answer.

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