1. A new antibiotic may reduce the average number of days that it takes to recover from a sinus infection. Five patients were randomly selected to get the new drug, while the other 6 patients received the old drug. Which Data Analysis Tool should you use?
2. a.z test
3. b.t test: Two Sample for Means Assuming Equal Variances
4. c.t-test: Paired Two Sample for Means
5. d.t test: Two Sample for Means AssumingUnequal Variances

1 points

QUESTION 2

1. Hellers manufacturers lawn mowers. Two different procedures have been proposed for mounting the engines on the frame of the lawnmower. Procedure 1 was developed by a longtime employee. Procedure 2 was developed by Heller's vice-president of engineering. A sample of 5 employees was timed using procedure 1, and the same five employees were timed using procedure 2. You want to test whether Procedure1 takes less time than Procedure 2, on average.
3. True or False?If you REJECT H₀, Procedure1 takes less time, on average, than Procedure 2.
4. TrueFalse

1 points

QUESTION 3

1. Hellers manufacturers lawn mowers. Two different procedures have been proposed for mounting the engines on the frame of the lawnmower. Procedure 1 was developed by a longtime employee. Procedure 2 was developed by Heller's vice-president of engineering. A sample of 5 employees was timed using procedure 1, and the same five employees were timed using procedure 2. Which Data Analysis tool should you use?
4. a.Linear Regressionb.t-test Two Sample Assuming Unequal Variances
5. c.t-test: Two Sample Assuming Equal Variances
6. d.t-test: Paired Two Sample for Means

1 points

QUESTION 4

1. As part of a study of corporate employees, the director of human resources for PNC, Inc. wants to compare the distance traveled to work by employees at its office in downtown Cincinnati with the distance for those in downtown Pittsburgh. A sample of 40 Pittsburgh employees showed they travel a mean of 370 miles per month. A sample of 35 Cincinnati employees showed they travel a mean of 380 miles per month.Which Data Analysis Tool should you use?
2. a.z test
3. b.t-test Paired Two Sample for Means
4. c.t-test: Two Sample for Means Assuming Unequal Variances
5. d.t-test: Two Sample for Means Assuming Equal Variances

1 points

QUESTION 5

1. Hellers manufacturers lawn mowers. Two different procedures have been proposed for mounting the engines on the frame of the lawnmower. Procedure 1 was developed by a longtime employee. Procedure 2 was developed by Heller's vice-president of engineering. A sample of 5 employees was timed using procedure 1, and the same five employees were timed using procedure 2.Test whether Procedure1 takes less time than Procedure 2, on average.State H₀and H₁.
3. a.H₀: Mean_{Procedure 1}-Mean_{Procedure 2}<0
4. H₁: Mean_{Procedure 1}-Mean_{Procedure 2}> 0
5. b.H₀: Mean_{Procedure 1}-Mean_{Procedure 2}= 0
6. H₁: Mean_Procedure1-Mean_Procedure20
7. c.H₀:Mean_Procedure2Procedure 1
8. H₁: Mean_{Procedure 2}>Mean_Procedure1
9. d.H₀: Mean_{Procedure 1}-Mean_{Procedure 2}>0
10. H₁: Mean_{Procedure 1}-Mean_{Procedure 2}< 0

1 points

QUESTION 6

1. The distribution of the weights of a sample of 140 cargo containers is symmetric and bell-shaped, with a mean of 500 pounds and a standard deviation of 20 pounds. What percentage of the cargo containers will weigh between 460 pounds and 540 pounds?
2. a.Can't tell-there is not enough information
3. b.99%
4. c.67%
5. d.95%

1 points

QUESTION 7

1. True or false? For symmetric distributions, the greater the standard deviation, the greater the variability.
2. TrueFalse

1 points

QUESTION 8

1. As part of a study of corporate employees, the director of human resources for PNC, Inc. wants to compare the distance traveled to work by employees at its office in downtown Cincinnati with the distance for those in downtown Pittsburgh. A sample of 40 Pittsburgh employees showed they travel a mean of 370 miles per month. A sample of 35 Cincinnati employees showed they travel a mean of 380 miles per month. The director tests whether the Cincinnati employees travel the same distance to work, on average, as thePittsburgh employees.
3. True or False? If youDO NOT REJECT H₀, themean distance traveled by Cincinnati employees is the same as the mean distance traveled by Pittsburgh employees.
4. TrueFalse

1 points

QUESTION 9

1. Suppose you are interested in buying a new Toyota Corolla. You have collected information about the dealer list price (in thousands of dollars). The original data went outone decimal place(17.6, for example).
2. Toyota Corolla List Prices ($1000s)
3. Mean20.26885861Standard Error0.337019672Median20.85Mode20.9Standard Deviation1.651052461Sample Variance2.72597423Kurtosis0.078401482Pearson's-1.055947168Range6.8Minimum16.3Maximum23.1Sum486.4526066Count24
4. Would it be appropriate to use the Empirical Rule to determine if $14,000 is an unusually high list price for a Toyota Corolla?
6. Yes
7. No

1 points

QUESTION 10

1. As part of a study of corporate employees, the director of human resources for PNC, Inc. wants to compare the distance traveled to work by employees at its office in downtown Cincinnati with the distance for those in downtown Pittsburgh. A sample of 40 Pittsburgh employees showed they travel a mean of 370 miles per month. A sample of 35 Cincinnati employees showed they travel a mean of 380 miles per month.Do the Cincinnati employees travel the same distance to work, on average, as thePittsburgh employees? Write the null andalternative hypotheses.

a.H0: MeanPittsburgh-MeanCincinnati= 0 H1: MeanPittsburgh-MeanCincinnati 0 

1. b.H₀: Mean_Pittsburgh- Mean_Cincinnati<0
2. H₁: Mean_Pittsburgh-Mean_Cincinnati>₀
3. c.H₀: Mean_Pittsburgh-Mean_Cincinnati>0
4. H₁: Mean_Pittsburgh-Mean_Cincinnati< 0
5. d.H₀: Mean_Pittsburgh= Mean_Cincinnati
6. H₁: Mean_Pittsburgh Mean_Cincinnati

1 points

QUESTION 11

1. Suppose you are interested in buying a new Toyota Corolla. You have collected information about the dealer list price (in thousands of dollars). The original data went outone decimal place(17.6, for example).
2. Toyota Corolla List Prices ($1000s)
3. Mean20.26885861Standard Error0.337019672Median20.85Mode20.9Standard Deviation1.651052461Sample Variance2.72597423Kurtosis0.078401482Pearson's-1.055947168Range6.8Minimum16.3Maximum23.1Sum486.4526066Count24
4. What is the typical list price for a Toyota Corolla?
5. a.$20,300b.$20.3
6. c.$20,900
7. d.$20.9

1 points

QUESTION 12

1. Suppose you are interested in buying a new Toyota Corolla. You have collected information about the dealer list price (in thousands of dollars). The original data went outone decimal place(17.6, for example).
2. Toyota Corolla List Prices ($1000s)
3. Mean20.26885861Standard Error0.337019672Median20.85Mode20.9Standard Deviation1.651052461Sample Variance2.72597423Kurtosis0.078401482Pearson's-1.055947168Range6.8Minimum16.3Maximum23.1Sum486.4526066Count24Is the distribution of list prices left-skewed, right-skewed or symmetric?
4. a.right-skewedb.symmetric
5. c.left-skewed

1 points

QUESTION 13

1. True or False? If the pvalue is less than the level of significance, you reject H0.
2. True
3. False

1 points

Click Save and Submit to save and submit. Click Save All Answers to save all answers.

1. A new antibiotic may reduce the average number of days that it takes to recover from a sinus infection. Five patients were randomly selected to get the new drug, while the other 6 patients received the old drug. Which Data Analysis Tool should you use?
2. a.z test
3. b.t test: Two Sample for Means Assuming Equal Variances
4. c.t-test: Paired Two Sample for Means
5. d.t test: Two Sample for Means AssumingUnequal Variances

1 points

QUESTION 2

1. Hellers manufacturers lawn mowers. Two different procedures have been proposed for mounting the engines on the frame of the lawnmower. Procedure 1 was developed by a longtime employee. Procedure 2 was developed by Heller's vice-president of engineering. A sample of 5 employees was timed using procedure 1, and the same five employees were timed using procedure 2. You want to test whether Procedure1 takes less time than Procedure 2, on average.
3. True or False?If you REJECT H₀, Procedure1 takes less time, on average, than Procedure 2.
4. TrueFalse

1 points

QUESTION 3

1. Hellers manufacturers lawn mowers. Two different procedures have been proposed for mounting the engines on the frame of the lawnmower. Procedure 1 was developed by a longtime employee. Procedure 2 was developed by Heller's vice-president of engineering. A sample of 5 employees was timed using procedure 1, and the same five employees were timed using procedure 2. Which Data Analysis tool should you use?
4. a.Linear Regressionb.t-test Two Sample Assuming Unequal Variances
5. c.t-test: Two Sample Assuming Equal Variances
6. d.t-test: Paired Two Sample for Means

1 points

QUESTION 4

1. As part of a study of corporate employees, the director of human resources for PNC, Inc. wants to compare the distance traveled to work by employees at its office in downtown Cincinnati with the distance for those in downtown Pittsburgh. A sample of 40 Pittsburgh employees showed they travel a mean of 370 miles per month. A sample of 35 Cincinnati employees showed they travel a mean of 380 miles per month.Which Data Analysis Tool should you use?
2. a.z test
3. b.t-test Paired Two Sample for Means
4. c.t-test: Two Sample for Means Assuming Unequal Variances
5. d.t-test: Two Sample for Means Assuming Equal Variances

1 points

QUESTION 5

1. Hellers manufacturers lawn mowers. Two different procedures have been proposed for mounting the engines on the frame of the lawnmower. Procedure 1 was developed by a longtime employee. Procedure 2 was developed by Heller's vice-president of engineering. A sample of 5 employees was timed using procedure 1, and the same five employees were timed using procedure 2.Test whether Procedure1 takes less time than Procedure 2, on average.State H₀and H₁.
3. a.H₀: Mean_{Procedure 1}-Mean_{Procedure 2}<0
4. H₁: Mean_{Procedure 1}-Mean_{Procedure 2}> 0
5. b.H₀: Mean_{Procedure 1}-Mean_{Procedure 2}= 0
6. H₁: Mean_Procedure1-Mean_Procedure20
7. c.H₀:Mean_Procedure2Procedure 1
8. H₁: Mean_{Procedure 2}>Mean_Procedure1
9. d.H₀: Mean_{Procedure 1}-Mean_{Procedure 2}>0
10. H₁: Mean_{Procedure 1}-Mean_{Procedure 2}< 0

1 points

QUESTION 6

1. The distribution of the weights of a sample of 140 cargo containers is symmetric and bell-shaped, with a mean of 500 pounds and a standard deviation of 20 pounds. What percentage of the cargo containers will weigh between 460 pounds and 540 pounds?
2. a.Can't tell-there is not enough information
3. b.99%
4. c.67%
5. d.95%

1 points

QUESTION 7

1. True or false? For symmetric distributions, the greater the standard deviation, the greater the variability.
2. TrueFalse

1 points

QUESTION 8

1. As part of a study of corporate employees, the director of human resources for PNC, Inc. wants to compare the distance traveled to work by employees at its office in downtown Cincinnati with the distance for those in downtown Pittsburgh. A sample of 40 Pittsburgh employees showed they travel a mean of 370 miles per month. A sample of 35 Cincinnati employees showed they travel a mean of 380 miles per month. The director tests whether the Cincinnati employees travel the same distance to work, on average, as thePittsburgh employees.
3. True or False? If youDO NOT REJECT H₀, themean distance traveled by Cincinnati employees is the same as the mean distance traveled by Pittsburgh employees.
4. TrueFalse

1 points

QUESTION 9

1. Suppose you are interested in buying a new Toyota Corolla. You have collected information about the dealer list price (in thousands of dollars). The original data went outone decimal place(17.6, for example).
2. Toyota Corolla List Prices ($1000s)
3. Mean20.26885861Standard Error0.337019672Median20.85Mode20.9Standard Deviation1.651052461Sample Variance2.72597423Kurtosis0.078401482Pearson's-1.055947168Range6.8Minimum16.3Maximum23.1Sum486.4526066Count24
4. Would it be appropriate to use the Empirical Rule to determine if $14,000 is an unusually high list price for a Toyota Corolla?
6. Yes
7. No

1 points

QUESTION 10

1. As part of a study of corporate employees, the director of human resources for PNC, Inc. wants to compare the distance traveled to work by employees at its office in downtown Cincinnati with the distance for those in downtown Pittsburgh. A sample of 40 Pittsburgh employees showed they travel a mean of 370 miles per month. A sample of 35 Cincinnati employees showed they travel a mean of 380 miles per month.Do the Cincinnati employees travel the same distance to work, on average, as thePittsburgh employees? Write the null andalternative hypotheses.

a.H0: MeanPittsburgh-MeanCincinnati= 0 H1: MeanPittsburgh-MeanCincinnati 0 

1. b.H₀: Mean_Pittsburgh- Mean_Cincinnati<0
2. H₁: Mean_Pittsburgh-Mean_Cincinnati>₀
3. c.H₀: Mean_Pittsburgh-Mean_Cincinnati>0
4. H₁: Mean_Pittsburgh-Mean_Cincinnati< 0
5. d.H₀: Mean_Pittsburgh= Mean_Cincinnati
6. H₁: Mean_Pittsburgh Mean_Cincinnati

1 points

QUESTION 11

1. Suppose you are interested in buying a new Toyota Corolla. You have collected information about the dealer list price (in thousands of dollars). The original data went outone decimal place(17.6, for example).
2. Toyota Corolla List Prices ($1000s)
3. Mean20.26885861Standard Error0.337019672Median20.85Mode20.9Standard Deviation1.651052461Sample Variance2.72597423Kurtosis0.078401482Pearson's-1.055947168Range6.8Minimum16.3Maximum23.1Sum486.4526066Count24
4. What is the typical list price for a Toyota Corolla?
5. a.$20,300b.$20.3
6. c.$20,900
7. d.$20.9

1 points

QUESTION 12

1. Suppose you are interested in buying a new Toyota Corolla. You have collected information about the dealer list price (in thousands of dollars). The original data went outone decimal place(17.6, for example).
2. Toyota Corolla List Prices ($1000s)
3. Mean20.26885861Standard Error0.337019672Median20.85Mode20.9Standard Deviation1.651052461Sample Variance2.72597423Kurtosis0.078401482Pearson's-1.055947168Range6.8Minimum16.3Maximum23.1Sum486.4526066Count24Is the distribution of list prices left-skewed, right-skewed or symmetric?
4. a.right-skewedb.symmetric
5. c.left-skewed

1 points

QUESTION 13

1. True or False? If the pvalue is less than the level of significance, you reject H0.
2. True
3. False

1 points

Click Save and Submit to save and submit. Click Save All Answers to save all answers.