31.An inspector inspects large truckloads of potatoes to determine the proportion with major defects prior to using the potatoes to be made into potato chips. She intends to compute a 95% confidence interval for p.

31.An inspector inspects large truckloads of potatoes to determine the proportion with major defects prior to using the potatoes to be made into potato chips. She intends to compute a 95% confidence interval for p. To do so, she selects an SRS of 50 potatoes from the over 2000 potatoes on the truck. Suppose that only 2 of the potatoes sampled are found to have major defects. Which of the following assumptions for inference about a proportion using a confidence interval are violated?
a. The population is at least 10 times as large as the sample.
b. n is so large that both the count of successes n and the count of failures n (1 – ) are 10 or more.
c. There appear to be no violations.

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