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A digital camcorder repair service has set a goal not to exceed an average of 5 working days from the time the unit is brought in to the time repairs are completed. A random sample of 12 repair records showed the following repair (in days)

9,2,5,1,5,4,7,5,11,3,7,2.

Ho: u< or equal to 5 days versus H1: u> 5 days

(a) Should you reject the Ho if t > 1.796?

(b) Calcualte the t-value

(d) Is the average repair time longer than 5 days?

(e) At a=.05 is the goal being met?

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Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M9366266

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