Answer:
The 88% confidence interval for the population proportion of full-time employees who favor plan A is (0.208, 0.344).
Step-by-step explanation:
<em>The question is incomplete: it lacks the sample data.</em>
<em>We will work with a sample size n=105 and a count of X=29 that prefer adopting the plan A.</em>
We have to calculate a 88% confidence interval for the proportion.
The sample proportion is p=0.276.
The standard error of the proportion is:
The critical z-value for a 88% confidence interval is z=1.555.
The margin of error (MOE) can be calculated as:
Then, the lower and upper bounds of the confidence interval are:
The 88% confidence interval for the population proportion is (0.208, 0.344).