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help with statistics homework

Statistics
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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

Apr 11th, 2015

a) The standard error of the mean is 19774 

b) expected shape of the sample mean is 1) Normal

see atteched document for details

Sample mean error.docx 

Any problems or further details please contact at once

Apr 11th, 2015

are you sure the standard deviation is 137000 because in another question it says 37000.

I am attaching another answer in a minute

Apr 11th, 2015

Reattaching with 37000 as standard deviation

Sample mean error.docx 

Apr 11th, 2015

the standard deviation is 37,000

Apr 11th, 2015
Apr 11th, 2015

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