Find whether there is a difference in the mean flight times among the three airlines.

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Answer 1

Question

Chapter 12, Problem 30CE

a.

To determine

Find whether there is a difference in the mean flight times among the three airlines.

b.

To determine

Find the 95% confidence interval for the difference in the means between Airlines G and C.

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Bad Dawgz is hosting its annual hot dog eating competition which involves eating 14 hot dogs, six inches in length. The following attached data represent the times (in seconds) taken by each contestant to eat the first hot dog and the fourteenth (last) hot dog. Twelve contestants finished all 14 hot dogs. a. Calculate a 90% confidence interval for the mean time taken by each contestant to eat the (i) first hot dog and (ii) last hot dog. b. Test the hypothesis that the difference between the two mean times for both is 35 seconds. Use the 5% level of significance. c. Subsequently, it was learnt that the times for the last hot dog were incorrectly recorded and that each of the values is 10 seconds too large. What, if any, difference does this make to the results of the test done in part (b)? Show all steps for the hypothesis test.

Answer 2

Question

Chapter 12, Problem 30CE

a.

To determine

Find whether there is a difference in the mean flight times among the three airlines.

b.

To determine

Find the 95% confidence interval for the difference in the means between Airlines G and C.

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Answer 3

Question

Chapter 12, Problem 30CE

a.

To determine

Find whether there is a difference in the mean flight times among the three airlines.

b.

To determine

Find the 95% confidence interval for the difference in the means between Airlines G and C.

Expert Solution & Answer

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Answer 4

Question

Chapter 12, Problem 30CE

a.

To determine

Find whether there is a difference in the mean flight times among the three airlines.

b.

To determine

Find the 95% confidence interval for the difference in the means between Airlines G and C.

Expert Solution & Answer

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Answer 5

Chapter 12, Problem 30CE

a.

To determine

Find whether there is a difference in the mean flight times among the three airlines.

b.

To determine

Find the 95% confidence interval for the difference in the means between Airlines G and C.

Answer 6

Chapter 12, Problem 30CE

a.

To determine

Find whether there is a difference in the mean flight times among the three airlines.

Answer 7

Chapter 12, Problem 30CE

a.

To determine

Find whether there is a difference in the mean flight times among the three airlines.

Answer 8

b.

To determine

Find the 95% confidence interval for the difference in the means between Airlines G and C.

Answer 9

b.

To determine

Find the 95% confidence interval for the difference in the means between Airlines G and C.

Answer 10

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Answer 11

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Answer 12

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Answer 13

Ch. 12 - Steele Electric Products Inc. assembles cell...Ch. 12 - What is the critical F value when the sample size...Ch. 12 - Prob. 2E Ch. 12 - Prob. 3E Ch. 12 - Prob. 4E Ch. 12 - Prob. 5E Ch. 12 - Prob. 6E Ch. 12 - Prob. 2SR Ch. 12 - Prob. 7E Ch. 12 - Prob. 8E

Find whether there is a difference in the mean flight times among the three airlines.

Solution Summary: The author explains the null and alternative hypotheses. If the p -value is greater than the level of significance, one is rejected.

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Find whether there is a difference in the mean flight times among the three airlines.

Find the 95% confidence interval for the difference in the means between Airlines G and C.

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Chapter 12 Solutions