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Digital camcorder repair service has set the goal not to exceed average of 5 working days from time unit is brought in to time repairs are completed. Random sample of 12 repair records showed 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) Compute the t-value
(c) Should null hypothesis be rejected?
(d) Is average repair time longer than 5 days?
(e) At a=.05 is the goal being met?

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Category:- Statistics and Probability
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