Question

The drug Lipitor is meant to reduce total cholesterol. In clinical trials, 111 out of 123 patients taking 10mg of Lipitor daily complained of flu-like symptoms. A patient advocacy group claims that the proportion of patients taking Lipitor who experience flu-like symptoms is larger than 80%. Use a 0.005 significance level to test the claim.

Claim: Select an answer p = 0.8 u < 0.8 u ≤ 0.8 p > 0.8 u ≠ 0.8 p < 0.8 p ≤ 0.8 u = 0.8 p ≥ 0.8 p ≠ 0.8 u ≥ 0.8 u > 0.8  which corresponds to Select an answer H0: p ≤ 0.8 H0: p = 0.8 H0: p ≠ 0.8 H1: p ≠ 0.8 H1: p > 0.8 H1: p < 0.8 H0: u ≥ 0.8

Opposite: Select an answer u = 0.8 p < 0.8 u ≤ 0.8 p ≥ 0.8 u > 0.8 u ≥ 0.8 u < 0.8 p > 0.8 p ≠ 0.8 u ≠ 0.8 p ≤ 0.8 p = 0.8  which corresponds to Select an answer H0: p ≠ 0.8 H0: u ≥ 0.8 H0: p ≤ 0.8 H1: p > 0.8 H0: p = 0.8 H1: p < 0.8 H1: p ≠ 0.8


The test is: Select an answer two-tailed right-tailed left-tailed

The test statistic is: Select an answer 2.84 3.02 2.62 3.31 3.15

The p-value is: Select an answer 0.0044 0.0013 0.0023 0.0008 0.0005

Based on this we: Select an answer Fail to reject the null hypothesis Reject the null hypothesis

Conclusion There Select an answer does does not  appear to be enough evidence to support the claim that the proportion of patients taking Lipitor who experience flu-like symptoms is larger than 80%.

Answer 1