Question

A metropolitan transportation authority has set a bus mechanical reliability goal of 3,700 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 3,750 bus miles and a sample standard deviation of 275 bus miles.

a. Is there evidence that the population mean bus miles is more than 3,700 bus​ miles? (Use a 0.10 level of​ significance.)

State the null and alternative hypotheses.

H0​:μ __ ____

H1​:μ __ ____

​(Type integers or​ decimals.)

Answer 1

H0​:μ = 3700 bus miles

H1​:μ > 3700 bus miles