Question: Use the given information to find the minimum sample size required to estimate an unknown population mean . How many adults must be randomly selected

Use the given information to find the minimum sample size required to estimate an unknown population mean .

How many adults must be randomly selected to estimate the mean FICO(credit rating) score of working adults in acountry? We want 90% confidence that the sample mean is within 4 points of the populationmean, and the population standard deviation is 63.

The minimum sample size required is

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