# Question: Referring to Exercise 8 1 a How is the distribution of

Referring to Exercise 8.1:

a. How is the distribution of the sample height data on p. 344 related to: (1) The distribution of the population? (2) The sampling distribution of sample means?

b. Using the techniques of Chapter 7, find the limits that would bound the middle 90% of the sampling distribution of sample means for samples of size 50 selected randomly from the population of female heights with a known mean of 63.7 inches and a standard deviation of 2.75 inches.

c. On the histogram drawn in Exercise 8.1: (1) Draw a vertical line at the population mean of 63.7. (2) Draw a horizontal line segment showing the interval found in part b. Does the sample mean found in Exercise 8.1 (b) fall in the interval? Answer yes or no, and explain what this means.

d. Using the techniques of Chapter 7, find for a random sample of 50 drawn from a population with a known mean of 63.7 inches and a standard deviation of 2.75 inches. Explain the meaning of the resulting value.

e. Does the sample of 50 height data values appear to belong to the population described by the NCHS? Explain.

a. How is the distribution of the sample height data on p. 344 related to: (1) The distribution of the population? (2) The sampling distribution of sample means?

b. Using the techniques of Chapter 7, find the limits that would bound the middle 90% of the sampling distribution of sample means for samples of size 50 selected randomly from the population of female heights with a known mean of 63.7 inches and a standard deviation of 2.75 inches.

c. On the histogram drawn in Exercise 8.1: (1) Draw a vertical line at the population mean of 63.7. (2) Draw a horizontal line segment showing the interval found in part b. Does the sample mean found in Exercise 8.1 (b) fall in the interval? Answer yes or no, and explain what this means.

d. Using the techniques of Chapter 7, find for a random sample of 50 drawn from a population with a known mean of 63.7 inches and a standard deviation of 2.75 inches. Explain the meaning of the resulting value.

e. Does the sample of 50 height data values appear to belong to the population described by the NCHS? Explain.

**View Solution:**## Answer to relevant Questions

A recruiter estimates that if you are hired to work for her company and you put in a full week at the commissioned sales representative position she is offer- ing, you will make “$525 plus or minus $250, 80% of the ...Determine the value of the confidence coefficient z(a/2) for each situation described: Based on the confidence interval formed in Exercise 8.27, give the value for each of the following: a. Point estimate b. Confidence coefficient c. Standard error of the mean d. Maximum error of estimate, E e. Lower ...Based on a survey conducted by Greenfield Online, 25- to 34-year-olds spend the most each week on fast food. The average weekly amount of $44 (based on 115 respondents) was reported in a May 2009 USA Today Snapshot. Assuming ...Find the sample size needed to estimate m of a normal population with =3 to within 1 unit at the 98% level of confidence.Post your question