Question

A healthcare company expects at least 88% of their employees
to get a flu shot every year. To estimate the true proportion of
employees that received their flu shots, the company samples 300
employees. 249 of those sampled said they received their shots in
the last year.

a. Determine a 95% confidence interval for the population
proportion p and determine the margin of error.

b. Interpret your result. Determine whether the company met
its expected goal of 88% of employees getting flu shots.
Explain.

c. If you create a 99% confidence interval, does your
conclusion change? Explain.

show all work

Answer #1

In a survey of 1000 American adults age 60 and over, 420
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shots. (Round confidence interval values to two decimal
places.)

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