# Question

Assume a normal distribution with known population variance. Calculate the margin of error to estimate the population mean, m, for the following.

a. 98% confidence level; n = 64; σ2 = 144

b. 99% confidence level; n = 120; σ = 100

a. 98% confidence level; n = 64; σ2 = 144

b. 99% confidence level; n = 120; σ = 100

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