## In a recent poll of 1200 randomly selected adult office workers, 32% said they had worn a Halloween costume to the office at least once. Rep

Question

In a recent poll of 1200 randomly selected adult office workers, 32% said they had worn a Halloween costume to the office at least once. Report the 95% confidence interval for the proportion of all adult office workers who have worn a Halloween costume to the office at least once. (Round final calculations to the nearest tenth of a percent)

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Math
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2021-10-13T22:27:48+00:00
2021-10-13T22:27:48+00:00 1 Answer
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## Answers ( )

Answer:Step-by-step explanation:The confidence interval for population proportion is given by :-

, where = sample proportion.

z* = critical value (Two-tailed)

n= Sample size ;

In the given problem , we are given

n= 1200

Also, we know that the critical value for 95 %confidence interval : z*= 1.96

Now, the

95% confidence interval for the proportionof all adult office workers who have worn a Halloween costume to the office at least once will be :-Hence, the required confidence interval=