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HW #9.54 Page 295 Cost of Text Books 07.52, p302, Cost of Text Books 1. The population mean cost of text books is no more than $300.00. The population mean cost of text books is more than $300.00. 2. 3. 4. 5. 6. df = 100 – 1 = 99 7. 8. 9. 10.

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hw 9 54

HW #9.54

Page 295

Cost of Text Books

slide2

07.52, p302, Cost of Text Books

1.

The population mean cost of text books is no more than $300.00.

The population mean cost of text books is more than $300.00.

2.

3.

4.

5.

slide3

6.

df = 100 – 1 = 99

slide4

7.

8.

9.

10.

There is enough evidence to conclude that the population mean cost of text books is more than $300.00.

slide5

b.

df = 100 – 1 = 99

slide6

b. continued

7.

8.

9.

10.

There is enough evidence to conclude that the population mean cost of text books is more than $300.00.

slide7

c.

1.

The population mean cost of text books is no more than $300.00.

The population mean cost of text books is more than $300.00.

2.

3.

4.

5.

slide8

C continued.

df = 100 – 1 = 99

slide9

c. continued

7.

8.

9.

10.

There is enough evidence to conclude that the population mean cost of text books is no more than $300.00. OR

There is not enough evidence to conclude that the average cost of textbooks per semester is more than $300.