Sampling Distribution of the Sample Mean Answers

Courtney would like to estimate the net worth of all people in the US. The distribution of net worth of people in the US is strongly skewed to the right. Courtney selects an SRS of size n = 15 from this population and calculates the sample mean. What is the shape of the distribution of the sample mean for all possible simple random samples of size 15 from this population?

sum✔ differencetotalamount

✔ typically varyvary exactly

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The amount of orange juice that can be obtained from a single orange is Normally distributed. A manufacturing company selects an SRS of size n = 5 from the population of all oranges in their inventory and calculates the sample mean amount of orange juice that is obtained. What is the shape of the distribution of the sample mean for all possible simple random samples of size 5 from this population?

The number of children per household in the US is strongly skewed to the right. A person studying demographics selects an SRS of size n = 40 from the population of all households in the US and calculates the sample mean number of children per household. What is the shape of the distribution of the sample mean for all possible simple random samples of size 40 from this population?

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Interpret the standard deviation of the sampling distribution of the sample mean.

Complete this interpretation of the standard deviation of the sampling distribution of the difference in the sample means. In random samples of size of brand A and brand B batteries, the in the sample means will by about 3.92 hours from the true difference in of 16 hours.