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Mathematics, 25.04.2020 04:04, keasiabrown25
A metropolitan transportation authority has set a bus mechanical reliability goal of 3,900 bus miles. Bus mechanical reliability is measured specifically as the number of bus miles between mechanical road calls. Suppose a sample of 100 buses resulted in a sample mean of 3,950 bus miles and a sample standard deviation of 225 bus miles.
Complete parts (a) and (b) below.
(a) Is there evidence that the population mean bus miles is more than 3,700 bus miles? (Use a 0.10 level ofsignificance.)
(b) Find the test statistic for this hypothesis test. (Round to two decimal places asneeded.) What is the p-value?
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