Calculator Homework #7 - Hypothesis Testing (Single Population Mean or Proportion) Use the p-value method and your calculator to test the following hypotheses. Make sure to show all steps of the procedure.

Exercise 1 A park manager suggests that the average attendance for the 10 most popular national parks last year was 6 million. The number of visits for the 10 most popular parks this year is shown below. At = 0.01, has the average attendance changed? The data are in millions of people. 4.7 17.2 14.0 6.1 6.1 4.9 9.3 9.4 6.4 6.1 a)

State the parameter being tested:

State the hypotheses and identify the claim: 0: :

b) Identify the test statistic:

c) State the statistical test to be used:

d) Calculate the p-value:

e) Interpret the p-value and compare to

f) Make a decision regarding 0

g) State the conclusion

Exercise 2 A poll done for Newsweek found that 13% of Americans have seen or sensed the presence of an angel. A contingent doubts that the percent is really that high. It conducts its own survey. Out of 76 Americans surveyed, only two had seen or sensed the presence of an angel. As a result of the contingent's survey, would you agree with the Newsweek poll? Use a 1% percent level of significance to test the claim of the contingent.

a) State the parameter being tested: State the hypotheses and identify the claim: 0: :

b) Identify the test statistic:

c) State the statistical test to be used:

d) Calculate the p-value:

e) Interpret the p-value and compare to

f) Make a decision regarding 0

g) State the conclusion