What proportion of students are willing to report cheating by other students? A student project put this question to an SRS of 172 undergraduates at a large university: “You witness two students cheating on a quiz. Do you go to the professor?” The Minitab output shows the results of a significance test and a 95% confidence interval based on the survey data.

a. Define the parameter of interest.

b. Check that the conditions for performing the significance test are met in this case.

c. Interpret the P-value.

d. Do these data give convincing evidence that the population proportion differs from 0.15? Justify your answer with appropriate evidence.

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E Session Test and CI for One Proportion Test of p = 0.15 vs p not = 0.15 Sample N Sample p 95 CI Z-Value P-Value 19 172 0.110465 (0.063619, 0.157312) -1.45 0.146 1,