Find the Sample Size

question 9

Multiple Choice

Find the sample size.
-ABI Insurance wants to estimate the average life expectancy to within one year with
95% confidence. Previous studies have shown the mean age life expectancy of its clients
To be 78.6 with a standard deviation of 4.48 years. How many randomly selected
Recently paid policies would they need to sample to achieve the desired level of accuracy?

• A) 98
• B) 121
• C) 54
• D) 78
• E) 83

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