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A metropolitan transportation authority has set a bus mechanical reliability goal of 3,800 bus miles. Bus...

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Statistics

A metropolitan transportation authority has set a bus mechanicalreliability goal of 3,800 bus miles. Bus mechanical reliability ismeasured specifically as the number of bus miles between mechanicalroad calls. Suppose a sample of 100 buses resulted in a sample meanof 3,875 bus miles and a sample standard deviation of 275 busmiles.

population of bus miles is more than 3,800 (use a 0.01 level ofsignificance)

(a) find the critical value(s) for the test statistic is(are)_

(b) is there sufficient evidence to reject the null hypothesisusing a=0.01

(c) Determine the p-value and interpret its meaning

Answer & Explanation Solved by verified expert
4.3 Ratings (754 Votes)
SolutionGiven that 3875 bus miless 275 bus milesn 100HypothesisH0 3800 bus milesHa 3800    See Answer
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