Use the given information to find the minimum sample size required to estimate an unknown population mean µ.
-How many commuters must be randomly selected to estimate the mean driving time of Chicago commuters? We want 99% confidence that the sample mean is within 4 minutes of the population mean, and the population standard deviation is known to be 6 minutes.
A) 7
B) 9
C) 13
D) 15

Question

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The Answer of Use the given information to find the minimum sample size required to estimate an unknown population mean µ.
-How many commuters must be randomly selected to estimate the mean driving time of Chicago commuters? We want 99% confidence that the sample mean is within 4 minutes of the population mean, and the population standard deviation is known to be 6 minutes.
A) 7
B) 9
C) 13
D) 15

Use the Given Information to Find the Minimum Sample Size