Explain whether the test is upper-tailed or lower-tailed test.

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Answer 1

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Chapter 16, Problem 39E

a.

To determine

Explain whether the test is upper-tailed or lower-tailed test.

b.

To determine

Explain the type-I error in this context.

c.

To determine

Explain the type-II error in this context.

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Workers in the office like to drink coffee during work. A doctor is concerned about this situation since the too much coffee consumption may result to long-term health problems. However, studies suggests that there is no risk in drinking three cups of coffee per day, which is about 250 mg of caffeine. The doctor wants to know if the amount of caffeine consumed by the workers is within tolerable limits. He randomly selected 20 students and found that they consume an average of 270 mg of caffeine each day with a standard deviation of 48 mg. Assume that the daily amount of caffeine consumed by students follow the normal distribution.1. Which of the following sets of hypotheses should be used in this study? A. Ho: μ = 250 vs. Ha: μ > 250 B. Ho: μ ≤ 250 vs. Ha: μ > 250 C. Ho: μ = 270 vs. Ha: μ > 270 D. Ho: μ = 270 vs. Ha: μ ≠ 270 2. Which of the following is(are) TRUE? I. The appropriate test procedure to answer the objective of the study is a…

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Answer 2

Question

Chapter 16, Problem 39E

a.

To determine

Explain whether the test is upper-tailed or lower-tailed test.

b.

To determine

Explain the type-I error in this context.

c.

To determine

Explain the type-II error in this context.

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Answer 3

Question

Chapter 16, Problem 39E

a.

To determine

Explain whether the test is upper-tailed or lower-tailed test.

b.

To determine

Explain the type-I error in this context.

c.

To determine

Explain the type-II error in this context.

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Answer 4

Question

Chapter 16, Problem 39E

a.

To determine

Explain whether the test is upper-tailed or lower-tailed test.

b.

To determine

Explain the type-I error in this context.

c.

To determine

Explain the type-II error in this context.

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Answer 5

Chapter 16, Problem 39E

a.

To determine

Explain whether the test is upper-tailed or lower-tailed test.

b.

To determine

Explain the type-I error in this context.

c.

To determine

Explain the type-II error in this context.

Answer 6

Chapter 16, Problem 39E

a.

To determine

Explain whether the test is upper-tailed or lower-tailed test.

Answer 7

Chapter 16, Problem 39E

a.

To determine

Explain whether the test is upper-tailed or lower-tailed test.

Answer 8

b.

To determine

Explain the type-I error in this context.

Answer 9

b.

To determine

Explain the type-I error in this context.

Answer 10

c.

To determine

Explain the type-II error in this context.

Answer 11

c.

To determine

Explain the type-II error in this context.

Answer 12

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Answer 13

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Answer 14

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Answer 15

Ch. 16.2 - An experiment to test the fairness of a roulette...Ch. 16.2 - Prob. 2JC Ch. 16.2 - Prob. 3JC Ch. 16.3 - Prob. 4JC Ch. 16.3 - Prob. 5JC Ch. 16.3 - Prob. 6JC Ch. 16.3 - Prob. 7JC Ch. 16.4 - Remember the bank thats sending out DVDs to try to...Ch. 16.4 - Prob. 9JC Ch. 16.4 - For the bank, which situation has higher power: a...

Explain whether the test is upper-tailed or lower-tailed test.

Solution Summary: The author explains the type-I error, which is made by concluding the evidence that the average weight of the TV stand is more than 500.

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Explain whether the test is upper-tailed or lower-tailed test.

Explain the type-I error in this context.

Explain the type-II error in this context.

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Chapter 16 Solutions