Question

For each problem a) State the null and alternative hypotheses, b) Verify that the requirements that allow use of the normal model to test the hypothesis are satisfied, c) Show work for calculating the test statistic, d) Compare the critical value with the test statistic, and e) State the conclusion.

1) The proportion of people who cover their mouth when they sneeze is 0.733. Sue observed 150 randomly selected people sneeze and found that 114 covered their mouth when they sneezed. Is there evidence to conclude that the proportion of people who cover their mouth when they sneeze is more than 0.733? Use an α = 0.10 level of significance.

Answer 1