AnswersCA-Statistics and Probability BEstimating the Difference between Two Population Proportions — Unit testQuestion 14
14
QuizMultiple Choice
Estimating the Difference between Two Population Proportions — Unit test
Question 14 • CA-Statistics and Probability B
Nick selects a simple random sample of 25 seniors at his large school and finds that 20 of them eat a healthy breakfast. He wants to construct a confidence interval for p = the proportion of all seniors at this school who eat a healthy breakfast, but he realizes he hasn’t met all the conditions for constructing the interval. Which condition for this procedure has he failed to meet?
Answer
A
n≥30B
n p hat greater-than-or-equal-to 10
C
n (1 minus p hat) greater-than-or-equal-to 10
D
The sample size must be less than 10% of the population size.