It is known that the population variance equals 484. With a .95 probability, the sample size that needs to be taken to estimate the population mean if the desired margin of error is 5 or less is

The minimum sample size is n = 75 so that the desired margin of error is 5 or less.                          

Step-by-step explanation:

We are given the following in the question:

Population variance = 484

Standard deviation =

Confidence level = 0.95

Significance level = 0.05

Margin of error = 5

Formula:

Margin of error =

Putting values, we get

Thus, the minimum sample size is n = 75 so that the desired margin of error is 5 or less.

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step-by-step explanation:

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step-by-step explanation: