Exercises for Section 6.2 Pg. 209 1. Use the Hospital charges worksheet in the f

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Exercises for Section 6.2

Pg. 209

1. Use the Hospital charges worksheet in the file Chpt 4-1.xls

a. Based on the mean and standard deviation for LS, generate a frequency distribution in terms of one standard deviation units around the mean

b. Develop the Excel chart to show the frequency distribution generated in (a)

Pg. 210

8. Assume the mean and standard deviation of diastolic blood pressure if 5 mmhg. Use =NORMDIST() function to determine the following.

a. The proportion of people who have diastolic blood pressure less than 76 mmhg

c. The proportion of people who have diastolic blood pressure greater than 73 mmhg

Pg. 228

2. A practice of eighteen dentists upgraded their computer system and suspects that in the process they lost information on recalls for many of their patients.

They drew a simple random sample of two hundred patient records and discovered that twenty-two of those had follow-up calls that were not included in the new

Computer system. Use the =NORMDIST() function to determine the following:

The probability that the true proportion of missed follow-up calls is less than 10 percent among all records

The probability that true proportion of missed follow-up calls is greater than 20 percent among all records

               Pg. 232

What is the number of degrees of freedom in each of the following?

Sample of ten observations

Sample of one hundred observations

Sample of two hundred and fifty observations

Pg. 232

What is the two-tail probability in each of the following?

n = 10, S.E. from the mean = 2

n = 10, S.E. from the mean = 3

n = 100, S.E. from the mean = 2

What is the one-tail probability in each of the following?

n = 10, S.E. from the mean = 2

n = 10, S.E. from the mean = 3

n = 100, S.E. from the mean = 2

How many standard errors from the mean are the following assuming two-tail results?

p =.05, n = 10

p = .12, n = 10

p = .05, n =10

How many standard errors from the mean are the following assuming one-tail results?

p =.05, n = 10

p = .12, n = 10

p = .05, n = 100

Exercises for Section 6.2

Pg. 209

1. Use the Hospital charges worksheet in the file Chpt 4-1.xls

a. Based on the mean and standard deviation for LS, generate a frequency distribution in terms of one standard deviation units around the mean

b. Develop the Excel chart to show the frequency distribution generated in (a)

Pg. 210

8. Assume the mean and standard deviation of diastolic blood pressure if 5 mmhg. Use =NORMDIST() function to determine the following.

a. The proportion of people who have diastolic blood pressure less than 76 mmhg

c. The proportion of people who have diastolic blood pressure greater than 73 mmhg

Pg. 228

2. A practice of eighteen dentists upgraded their computer system and suspects that in the process they lost information on recalls for many of their patients.

They drew a simple random sample of two hundred patient records and discovered that twenty-two of those had follow-up calls that were not included in the new

Computer system. Use the =NORMDIST() function to determine the following:

The probability that the true proportion of missed follow-up calls is less than 10 percent among all records

The probability that true proportion of missed follow-up calls is greater than 20 percent among all records

Explanation / Answer

What is the number of degrees of freedom in each of the following?

Sample of ten observations

df = 9

Sample of one hundred observations

df = 99

Sample of two hundred and fifty observations

df = 249

for the other question please post it in a new question

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