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QuizMultiple Choice

Estimating a Population Proportion

Question 1 • CA-Statistics and Probability B

A producer of 10-ounce bags of pretzels claims that less than 7% of the pretzels in each bag are broken. The 95% confidence interval for the true proportion of broken pretzels in the 10-ounce bags produced by this company is (0.036, 0.067). Is it reasonable to conclude that less than 7% of pretzels in each bag are broken?

Answer
A
Yes, because the entire interval is less than 0.07.
B
Yes, because the center of the interval is 0.0515, which is less than 7%.
C
No, because a different sample might give different results.
D
No, because the interval has many values that are plausible.
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