Use the following information to answer the question. In a recent poll of 1100 randomly selected home delivery truck drivers, 26% said they had encountered an aggressive dog on the job at least once.
-Report the 95% confidence interval for the proportion of all home delivery truck drivers who haveencountered an aggressive dog on the job at least once. (Round final calculations to the nearesttenth of a percent)
A) (23.4%, 28.6%)
B) (20.7%, 31.3%)
C) (24.7 %, 27.3%)
D) None of these

Question

Quizplus · Accepted Answer

The 95% confidence interval is calculated using the formula for a proportion: p ± Z * sqrt[(p(1-p))/n], where p = 0.26, n = 1100, and Z ≈ 1.96 for 95% confidence. This results in the interval (23.4%, 28.6%).

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