Find the two χ 2 -values that divide the area under the curve into a middle 0.95 area and two outside 0.025 areas for a χ 2 -curve with 5 degrees of freedom using Table VII in Appendix A and to illustrate it graphically.

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Answer 1

Question

Chapter 11.1, Problem 11E

a.

To determine

Find the two χ2-values that divide the area under the curve into a middle 0.95 area and two outside 0.025 areas for a χ2-curve with 5 degrees of freedom using Table VII in Appendix A and to illustrate it graphically.

b.

To determine

Find the two χ2-values that divide the area under the curve into a middle 0.95 area and two outside 0.025 areas for a χ2-curve with 26 degrees of freedom using Table VII in Appendix A and to illustrate it graphically.

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See data attached. SoftBus Company sells PC equipment and customized software to small companies to help them manage their day-to-day business activities. Although SoftBus spends time with all customers to understand their needs, the customers are eventually on their own to use the equipment and software intelligently. To understand its customers better, SoftBus recently sent questionnaires to a large number of prospective customers. Key personnel—those who would be using the software—were asked to fill out the questionnaire. SoftBus received 82 usable responses, as shown in the file. You can assume that these employees represent a random sample of all of SoftBus's prospective customers. SoftBus believes it can afford to spend much less time with customers who own PCs and score at least 4 on PC Knowledge. Let's call these the "PC-savvy" customers. On the other hand, SoftBus believes it will have to spend a lot of time with customers who do not own a PC and score 2 or less on PC…

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Answer 2

Question

Chapter 11.1, Problem 11E

a.

To determine

Find the two χ2-values that divide the area under the curve into a middle 0.95 area and two outside 0.025 areas for a χ2-curve with 5 degrees of freedom using Table VII in Appendix A and to illustrate it graphically.

b.

To determine

Find the two χ2-values that divide the area under the curve into a middle 0.95 area and two outside 0.025 areas for a χ2-curve with 26 degrees of freedom using Table VII in Appendix A and to illustrate it graphically.

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Answer 3

Question

Chapter 11.1, Problem 11E

a.

To determine

Find the two χ2-values that divide the area under the curve into a middle 0.95 area and two outside 0.025 areas for a χ2-curve with 5 degrees of freedom using Table VII in Appendix A and to illustrate it graphically.

b.

To determine

Find the two χ2-values that divide the area under the curve into a middle 0.95 area and two outside 0.025 areas for a χ2-curve with 26 degrees of freedom using Table VII in Appendix A and to illustrate it graphically.

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Answer 4

Question

Chapter 11.1, Problem 11E

a.

To determine

Find the two χ2-values that divide the area under the curve into a middle 0.95 area and two outside 0.025 areas for a χ2-curve with 5 degrees of freedom using Table VII in Appendix A and to illustrate it graphically.

b.

To determine

Find the two χ2-values that divide the area under the curve into a middle 0.95 area and two outside 0.025 areas for a χ2-curve with 26 degrees of freedom using Table VII in Appendix A and to illustrate it graphically.

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Answer 5

Chapter 11.1, Problem 11E

a.

To determine

Find the two χ2-values that divide the area under the curve into a middle 0.95 area and two outside 0.025 areas for a χ2-curve with 5 degrees of freedom using Table VII in Appendix A and to illustrate it graphically.

b.

To determine

Find the two χ2-values that divide the area under the curve into a middle 0.95 area and two outside 0.025 areas for a χ2-curve with 26 degrees of freedom using Table VII in Appendix A and to illustrate it graphically.

Answer 6

Chapter 11.1, Problem 11E

a.

To determine

Find the two χ2-values that divide the area under the curve into a middle 0.95 area and two outside 0.025 areas for a χ2-curve with 5 degrees of freedom using Table VII in Appendix A and to illustrate it graphically.

Answer 7

Chapter 11.1, Problem 11E

a.

To determine

Find the two χ2-values that divide the area under the curve into a middle 0.95 area and two outside 0.025 areas for a χ2-curve with 5 degrees of freedom using Table VII in Appendix A and to illustrate it graphically.

Answer 8

b.

To determine

Find the two χ2-values that divide the area under the curve into a middle 0.95 area and two outside 0.025 areas for a χ2-curve with 26 degrees of freedom using Table VII in Appendix A and to illustrate it graphically.

Answer 9

b.

To determine

Find the two χ2-values that divide the area under the curve into a middle 0.95 area and two outside 0.025 areas for a χ2-curve with 26 degrees of freedom using Table VII in Appendix A and to illustrate it graphically.

Answer 10

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Answer 11

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Answer 12

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Answer 13

Ch. 11.1 - What is meant by saying that a variable has a...Ch. 11.1 - How are different chi-square distributions...Ch. 11.1 - Two 2-curves have degrees of freedom 12 and 20,...Ch. 11.1 - The t-table has entries for areas of 0.10, 0.05,...Ch. 11.1 - Prob. 5E Ch. 11.1 - Prob. 6E Ch. 11.1 - In Exercises 11.511.2, use Table VII to find the...Ch. 11.1 - Prob. 8E Ch. 11.1 - Prob. 9E Ch. 11.1 - Prob. 10E

Find the two χ 2 -values that divide the area under the curve into a middle 0.95 area and two outside 0.025 areas for a χ 2 -curve with 5 degrees of freedom using Table VII in Appendix A and to illustrate it graphically.

Solution Summary: The author illustrates the chi2 -curve with 5 degrees of freedom using Table VII in Appendix A.

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Find the two χ2-values that divide the area under the curve into a middle 0.95 area and two outside 0.025 areas for a χ2-curve with 5 degrees of freedom using Table VII in Appendix A and to illustrate it graphically.

Find the two χ2-values that divide the area under the curve into a middle 0.95 area and two outside 0.025 areas for a χ2-curve with 26 degrees of freedom using Table VII in Appendix A and to illustrate it graphically.

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Chapter 11 Solutions