HW #9.54

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# HW #9.54 - PowerPoint PPT Presentation

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

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.

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

b.

df = 100 – 1 = 99

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.

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.

C continued.

df = 100 – 1 = 99

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.