SOLUTION: Billy Bob’s carpet barn is concerned about the delivery times of one of their drivers. The word on the street is that he likes to pull off the side of the road and study statistics
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Question 323255: Billy Bob’s carpet barn is concerned about the delivery times of one of their drivers. The word on the street is that he likes to pull off the side of the road and study statistics when he thinks no one is looking. Billy Bob’s has two other drivers. Sample delivery times (in minutes) for each driver follow. At the .05 significance level is there a difference in the mean delivery time?
You can put this solution on YOUR website! At the .05 significance level is there a difference in the mean delivery time?
Driver 1 Driver 2 Driver 3
21 29 29
28 26 22
30 25 27
21 26 24
22 27 27
25 22 29
26 21 27
1. State the null and alternate hypothesis.
Ho: all the means are equal
Ha: at least one is different
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2. State the decision rule (we reject Ho when…).
I'll let you look that up.
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3. What is the calculated F-statistic
F = 1.7772
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4. What is your decision regarding the null hypothesis?
The p-value is 0.1975 so Fail to reject Ho.
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Cheers,
Stan H.
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