Essentials of Business Analytics (MindTap Course List)
2nd Edition
ISBN: 9781305627734
Author: Jeffrey D. Camm, James J. Cochran, Michael J. Fry, Jeffrey W. Ohlmann, David R. Anderson
Publisher: Cengage Learning
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Textbook Question
Chapter 6, Problem 26P
Because of high production-changeover time and costs, a director of manufacturing must convince management that a proposed manufacturing method reduces costs before the new method can be implemented. The current production method operates with a
- a. Develop the null and alternative hypotheses most appropriate for this study.
- b. Comment on the conclusion when H0 cannot be rejected.
- c. Comment on the conclusion when H0 can be rejected.
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Because of high production-changeover time and costs, a director of manufacturing must convince management that a proposed manufacturing method reduces costs before the new method can be implemented. The current production method operates with a mean cost of $260 per hour. A research study will measure the cost of the new method over a sample production period.
(a)
Develop the null and alternative hypotheses most appropriate for this study.
H0: ? < 260
Ha: ? ≥ 260
H0: ? > 260
Ha: ? ≤ 260
H0: ? ≤ 260
Ha: ? > 260
H0: ? = 260
Ha: ? ≠ 260
H0: ? ≥ 260
Ha: ? < 260
(b)
Comment on the conclusion when
H0
cannot be rejected.
There is not enough evidence to conclude that the new method reduces costs. Management should consider implementing the new method.There is enough evidence to conclude that the new method reduces costs. Management should not consider implementing the new method. There is enough evidence to conclude that the new method reduces costs. Management…
State the null and alternative hypotheses.
The mean cost of tuition at a community college (1) is less than the mean cost of
tuition at a university (2).
Ho: H₁ H2 H₁: H₁> H₂
Ho: M₁
A local coach wants to see if training in light rooms or dark rooms impacts athlete performance. With the single team, the coach tries training in different conditions and takes measurements. She ran her analysis in Microsoft Excel and received the following output table. If the P value is less than 0.05, the null hypothesis may be rejected. Based on the data table, what decision should the coach make about the hypothesis?
Coach should reject the null hypothesis.
Coach should fail to reject the null hypothesis.
Coach should accept the null hypothesis.
Coach does not have enough information to decide.
Chapter 6 Solutions
Essentials of Business Analytics (MindTap Course List)
Ch. 6 - The American League consists of 15 baseball teams....Ch. 6 - The U.S. Golf Association is considering a ban on...Ch. 6 - A simple random sample of 5 months of sales data...Ch. 6 - Morningstar publishes ratings data on 1,208...Ch. 6 - One of the questions in the Pew Internet &...Ch. 6 - In this chapter we showed how a simple random...Ch. 6 - The College Board reported the following mean...Ch. 6 - Prob. 8PCh. 6 - The Economic Policy Institute periodically issues...Ch. 6 - The state of California has a mean annual rainfall...
Ch. 6 - The president of Doerman Distributors, Inc.,...Ch. 6 - Prob. 12PCh. 6 - People end up tossing 12% of what they buy at the...Ch. 6 - Prob. 14PCh. 6 - The International Air Transport Association...Ch. 6 - Prob. 16PCh. 6 - Health insurers are beginning to offer...Ch. 6 - The average annual premium for automobile...Ch. 6 - Prob. 19PCh. 6 - According to Thomson Financial, last year the...Ch. 6 - The Pew Research Center Internet Project conducted...Ch. 6 - For many years businesses have struggled with the...Ch. 6 - The manager of the Danvers-Hilton Resort Hotel...Ch. 6 - The manager of an automobile dealership is...Ch. 6 - A production line operation is designed to fill...Ch. 6 - Because of high production-changeover time and...Ch. 6 - Duke Energy reported that the cost of electricity...Ch. 6 - Prob. 28PCh. 6 - Carpetland salespersons average 8,000 per week in...Ch. 6 - Suppose a new production method will be...Ch. 6 - Prob. 31PCh. 6 - A shareholders’ group, in lodging a protest,...Ch. 6 - Prob. 33PCh. 6 - Prob. 34PCh. 6 - Prob. 35PCh. 6 - According to the National Automobile Dealers...Ch. 6 - What percentage of the population live in their...Ch. 6 - Prob. 38PCh. 6 - Ten years ago 53% of American families owned...Ch. 6 - Prob. 40PCh. 6 - Prob. 41PCh. 6 - Prob. 42PCh. 6 - The Port Authority sells a wide variety of cables...Ch. 6 - The Port Authority also wants to determine if the...Ch. 6 - Prob. 1C
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