# Question

a. Use a computer to draw 500 random samples, each of size 20, from the normal probability distribution with mean 80 and standard deviation 15.

b. Find the mean for each sample.

c. Construct a frequency histogram of the 500 sample means.

d. Describe the sampling distribution shown in the histogram in part c, including the mean and standard deviation.

b. Find the mean for each sample.

c. Construct a frequency histogram of the 500 sample means.

d. Describe the sampling distribution shown in the histogram in part c, including the mean and standard deviation.

## Answer to relevant Questions

a. Click “1” for “# Samples.” Note the four data values and their mean. Change “slow” to “batch” and take at least 1000 samples using the “500” for “# Samples.” b. What is the mean for the 1001 ...A certain population has a mean of 500 and a standard deviation of 30. Many samples of size 36 are randomly selected and the means calculated. a. What value would you expect to find for the mean of all these sample means? ...b. Find mean for each of the 200 samples. d. Compare the results of part c with the three statements made for the SDSM and CLT on page 320. e. Compare these results with the results obtained in Exercise 7. 27. ...The heights of the kindergarten children mentioned in Example a. If an individual kindergarten child is selected at random, what is the probability that he or she has a height between 38 and 40 inches? b. A classroom of 30 ...c. How many of the sample means in part b have values between 4 and 6? What percentage is that? d. Compare the answers to parts a and c, and explain any differences that occurred.Post your question

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