Can someone help me out on this one. Finding Sample Size. In the following exerc

Question

Can someone help me out on this one. Finding Sample Size. In the following exercise, use thegiven margin of error, confidence level, and population standarddeviation to find the minimum sample size required toestimate an unknown population mean . #20: Margin of error: 1.5 mm, confidence level: 95%, =8.7 mm. Can someone help me out on this one. Finding Sample Size. In the following exercise, use thegiven margin of error, confidence level, and population standarddeviation to find the minimum sample size required toestimate an unknown population mean . #20: Margin of error: 1.5 mm, confidence level: 95%, =8.7 mm.

Explanation / Answer

1.5 = 1.96*8.7/(n) ==> n = 129.231, so use 130 to be safe

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