Question

5. (A) Describe what a sampling distribution is and what it contains. (B) What is the mean and SD of any sampling distribution equal to? (Hint: a specific value is not the answer). 6. What happens to the value of the estimated standard error as the shape of a sampling distribution becomes (A) flatter and (B) more peaked? Explain. 7. Provide a general definition/description of what the estimated standard error of the mean (SEM) is. 8. In the long-run we can expect the population mean or proportion/percentage to occur. Explain what is mean by the phrase in the long run? Hint: What does the null hypothesis expect? 9. A sample of 16 students took the American College Testing (ACT) Program composite college entrance exam and were found to have a mean of 18 and a sample SD equal to 6. (A) What is the value of the estimated standard error of the mean (SEM)? (B) Provide an interpretation of the value obtained in part A. (C) Describe how the researcher might reduce the size of the SEM if the study is repeated. 10. A marketing researcher conducted a survey of 25 shoppers randomly selected at the local mall and found that the average shopper intended to spend an average of $32.00 during their visit to the mall. The researcher also found that, on the average, the sample of shoppers surveyed spent $7.00 different than the mean of $32.00. (A) What is the value of the estimated standard error of the mean (SEM)? (B) Provide an interpretation of the value obtained in part A. (C) Based on the sample surveyed, what is the estimated average amount spent at the mall for all shoppers?

          5.
(A) Describe what a sampling distribution is and what it contains. (B) What is the mean and
SD of any sampling distribution equal to? (Hint: a specific value is not the answer).
6.
What happens to the value of the estimated standard error as the shape of a sampling
distribution becomes (A) flatter and (B) more peaked? Explain.
7.
Provide a general definition/description of what the estimated standard error of the mean
(SEM) is.
8.
In the long-run we can expect the population mean or proportion/percentage to occur.
Explain what is mean by the phrase in the long run? Hint: What does the null hypothesis
expect?
9.
A sample of 16 students took the American College Testing (ACT) Program composite
college entrance exam and were found to have a mean of 18 and a sample SD equal to 6.
(A) What is the value of the estimated standard error of the mean (SEM)?
(B) Provide an interpretation of the value obtained in part A.
(C) Describe how the researcher might reduce the size of the SEM if the study is
repeated.
10.
A marketing researcher conducted a survey of 25 shoppers randomly selected at the local
mall and found that the average shopper intended to spend an average of $32.00 during
their visit to the mall. The researcher also found that, on the average, the sample of
shoppers surveyed spent $7.00 different than the mean of $32.00.
(A) What is the value of the estimated standard error of the mean (SEM)?
(B) Provide an interpretation of the value obtained in part A.
(C) Based on the sample surveyed, what is the estimated average amount spent at the
mall for all shoppers?

5.
(A) Describe what a sampling distribution is and what it contains. (B) What is the mean and
SD of any sampling distribution equal to? (Hint: a specific value is not the answer).
6.
What happens to the value of the estimated standard error as the shape of a sampling
distribution becomes (A) flatter and (B) more peaked? Explain.
7.
Provide a general definition/description of what the estimated standard error of the mean
(SEM) is.
8.
In the long-run we can expect the population mean or proportion/percentage to occur.
Explain what is mean by the phrase in the long run? Hint: What does the null hypothesis
expect?
9.
A sample of 16 students took the American College Testing (ACT) Program composite
college entrance exam and were found to have a mean of 18 and a sample SD equal to 6.
(A) What is the value of the estimated standard error of the mean (SEM)?
(B) Provide an interpretation of the value obtained in part A.
(C) Describe how the researcher might reduce the size of the SEM if the study is
repeated.
10.
A marketing researcher conducted a survey of 25 shoppers randomly selected at the local
mall and found that the average shopper intended to spend an average of 32.00 during
their visit to the mall. The researcher also found that, on the average, the sample of
shoppers surveyed spent7.00 different than the mean of 32.00.
(A) What is the value of the estimated standard error of the mean (SEM)?
(B) Provide an interpretation of the value obtained in part A.
(C) Based on the sample surveyed, what is the estimated average amount spent at the
mall for all shoppers?

Added by Nathan R.

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