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D. Mean and Standard Deviation of Sampling Distribution of Sample Means 1. The scores of individual students on a national test have a normal distribution with mean 20 and standard deviation 5.5. At Dona Pilar National High School, 80 students took the test. If the scores at this school have the same distribution as national scores, what are the mean and standard deviation of the sample mean for 80 students. 2. A population consists of the five measurements 2, 5, 7, 0 and 8. a. What is the mean and standard deviation of the population? b. How many different samples of size n = 2 can be drawn from the population? List them with their corresponding means. c. Construct the sampling distribution of the sample means. d. What is the mean of the sampling distribution of the sample means? Compare this to the mean of the population. e. What is the standard deviation of the sampling distribution of the sample means? Compare this to the standard deviation of the population.

          D. Mean and Standard Deviation of Sampling Distribution of Sample Means
1. The scores of individual students on a national test have a normal distribution with mean 20
and standard deviation 5.5. At Dona Pilar National High School, 80 students took the test. If the
scores at this school have the same distribution as national scores, what are the mean and
standard deviation of the sample mean for 80 students.
2. A population consists of the five measurements 2, 5, 7, 0 and 8.
a. What is the mean and standard deviation of the population?
b. How many different samples of size n = 2 can be drawn from the population? List them with
their corresponding means.
c. Construct the sampling distribution of the sample means.
d. What is the mean of the sampling distribution of the sample means? Compare this to the
mean of the population.
e. What is the standard deviation of the sampling distribution of the sample means?
Compare this to the standard deviation of the population.

D. Mean and Standard Deviation of Sampling Distribution of Sample Means
1. The scores of individual students on a national test have a normal distribution with mean 20
and standard deviation 5.5. At Dona Pilar National High School, 80 students took the test. If the
scores at this school have the same distribution as national scores, what are the mean and
standard deviation of the sample mean for 80 students.
2. A population consists of the five measurements 2, 5, 7, 0 and 8.
a. What is the mean and standard deviation of the population?
b. How many different samples of size n = 2 can be drawn from the population? List them with
their corresponding means.
c. Construct the sampling distribution of the sample means.
d. What is the mean of the sampling distribution of the sample means? Compare this to the
mean of the population.
e. What is the standard deviation of the sampling distribution of the sample means?
Compare this to the standard deviation of the population.

Added by Frank S.

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