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Probability Normal Distribution

A sample of 100 is taken from a population which has a normal distribution with a mean of 80 and a standard deviation of 40.

What is the probability that the sample mean is between 74 and 81 is?

Solution Preview

n=100
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<br>X - Normal (mean=80, sd=40)
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<br>Xbar - sample mean
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<br>P(74< Xbar < ...

Solution Summary

The solution addresses if a sample of 100 is taken from a population which has a normal distribution with a mean of 80 and a standard deviation of 40. What is the probability that the sample mean is between 74 and 81 is?

$2.19