Suppose we wish to analyze the proportion of people who purchase insurance for screen replacement on...

Suppose we wish to analyze the proportion of people who purchase insurance for screen replacement on their cell phones. Out of a random sample of 70 cell phone owners, we find that 32 purchased screen replacement insurance. Calculate a 98% confidence interval for the true proportion of cell phone owners who purchase screen replacement insurance.

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Expert Solution

Solution:

We know that:

The 98% confidence interval for the true proportion of cell phone owners who purchase screen replacement insurance is:

Therefore, the 98% confidence interval for the true proportion of cell phone owners who purchase screen replacement insurance is:

orchestra answered 1 year ago

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