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One Sample t test.

Throughout recent seasons, Major League Baseball has been criticized for the length of the games. A report indicated that average game lasts 3 hours and 30 minutes. A sample of 17 games revealed the following times to completion. (Note that the minutes have been changed to fractions of hours, so that a game that lasted 2 hours and 24 minutes is reported at 2.40 hours.)

2.98

2.40

2.70

2.25

3.23

3.17

2.93

3.18

2.80

2.38

3.75

3.20

3.27

3.52

2.58

4.45

2.45

Â

Can we finish off that the mean time for a game is less than 3.50 hours? Use the .05 significance level. 

 

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