Question: Determine the minimum sample size required when you want to be 95% confident that the sample mean is within two units of the population mean.

Determine the minimum sample size required when you want to be 95% confident that the sample mean is within two units of the population mean. Assume a population standard deviation of 3.8 in a normally distributed population.

A/ 15

B/ 13

C/ 14

D/ 12

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