A sample of 100 is taken from a population which has a normal distributionwith a meanof 80 and a standard deviationof 40.

What is the probabilitythat the sample mean is between 74 and 81 is?

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 < …

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?