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