# Question: a A statistics practitioner wants to test the following hypotheses

a. A statistics practitioner wants to test the following hypotheses:

H0: p = .70

H1: p > .70

A random sample of 100 produced p̂ = .73. Calculate the p-value of the test.

b. Repeat part (a) with p̂ = .72.

c. Repeat part (a) with p̂ = .71.

d. Describe the effect on the z-statistic and its p-value of decreasing the sample proportion.

H0: p = .70

H1: p > .70

A random sample of 100 produced p̂ = .73. Calculate the p-value of the test.

b. Repeat part (a) with p̂ = .72.

c. Repeat part (a) with p̂ = .71.

d. Describe the effect on the z-statistic and its p-value of decreasing the sample proportion.

**View Solution:**## Answer to relevant Questions

Suppose that you used the sample size calculated in Exercise 12.86 and found p̂ = .75.a. Estimate the population proportion with 90% confidence.b. Is this the result you expected? Explain.c. If you were hired to conduct ...In Chapter 6, we discussed how an understanding of probability allows one to properly interpret the results of medical screening tests. The use of Bayes’s Law requires a set of prior probabilities, which are based on ...A professor of business statistics recently adopted a new textbook. At the completion of the course, 100 randomly selected students were asked to assess the book. The responses are as follows:Excellent (1), Good (2), ...Are you employed by the federal, state, or local government, or by a private employer (WRK-GOVT)? 1 = Government, 2 = Private. Estimate with 90% confidence the number of Americans who work for government.Estimate with 95% confidence the number of American adults who work for themselves (WRKSLF: 1 = Self employed, 2 = Someone else).Post your question