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Suppose ABI Samples 100 Recently Paid Policies

Question 7

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Suppose ABI samples 100 recently paid policies. This sample yields a mean of 77.7 years and a standard deviation of 3.6 years. Find a 90% confidence interval and interpret.

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77.7 ± (1.660) 3.6 / blured image 77.1 yea...

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