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 have encountered an aggressive dog on the job at least once. (Round final calculations to the nearest tenth 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 sample proportion is 0.26. The standard error is calculated as sqrt((0.26*(1-0.26))/1100). The 95% confidence interval is found using the formula: sample proportion ± 1.96 * standard error. This results in the interval (23.4%, 28.6%).

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