Suppose µ = 50 and ?² = 100 for a population. In a sample where n = 100 is randomly taken, 90% of all possible sample means will fall between 49 and 51.

Question

Quizplus · Accepted Answer

The standard deviation of the sample mean is 1 (since the population standard deviation is 10 and n = 100), so 90% of sample means will fall within approximately 1.645 standard deviations from the mean, which is not between 49 and 51.

Suppose µ = 50 and ?2 = 100 for a Population

Suppose µ = 50 and ?² = 100 for a Population