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Mathematics, 14.12.2019 03:31 clipsyden
Adigital 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 times (in days): 5, 7, 4, 6, 7, 5, 5, 6, 4, 4, 7, 5.
(a) h0: μ ≤ 5 days versus h1: μ > 5 days. at α = .05, choose the right option. reject h0 if tcalc > 1.7960
reject h0 if tcalc < 1.7960
b. calculate the test statistic.
c-1. the null hypothesis should be rejected.
i. true
ii. false
c-2. the average repair time is longer than 5 days.
i. true
ii. false
c-3 at α = .05 is the goal being met?
i. true
ii. false
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Answers: 1
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