SOLUTION: The weights of 350,000 ball bearings are normally distributed with a mean of 22.40 ounces and a standard deviation of 0.040 ounces. If 300 random samples of 36 are drawn from the p

Question 632149: The weights of 350,000 ball bearings are normally distributed with a mean of 22.40 ounces and a standard deviation of 0.040 ounces. If 300 random samples of 36 are drawn from the parent population, determine the expected mean and standard deviation of the sampling distribution of the means
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
The weights of 350,000 ball bearings are normally distributed with a mean of 22.40 ounces and a standard deviation of 0.040 ounces. If 300 random samples of 36 are drawn from the parent population, determine the expected mean and standard deviation of the sampling distribution of the means
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Central Limit Theorem says:
mean of sample means = 22.4
std of sample means = 0.040/sqrt(36) = 0.0067
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Cheers,
Stan H.
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