help with statistics homework
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natryvan12
Mathematics
Description
1. Information from the American Institute of Insurance indicates the mean amount of life insurance per household in the United States is $115,000. This distribution follows the normal distribution with a standard deviation of $137,000
a)If we select a random sample of 48 households, what is the standard error of the mean?(Round your answer to nearest whole number)
standard error of mean
b)What is t the expected shape of the distribution of the sample mean?
1)Normal
2)Unknown
3)Uniform
4)not normal
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