Question

a. all Hypothesis Tests must include all four steps, clearly labeled;

b. all Confidence Intervals must include all output as well as the CI itself

c. include which calculator function you used for each problem.

1. In April 2009 the Gallup organization surveyed 676 adults aged 18 and older and found that 352 believed they would not have enough money to live comfortably in retirement. Does the sample data suggest that a majority of adults in the United States believe they will not have enough money in retirement? Use the α = 0.05 level of significance.

Answer 1

Solution-

Given data ,

Sample size = 676

x= 352

Alpha = 0.05