Z test for population mean difference

Assignment Help Basic Statistics

Reference no: EM13106618

A leasing firm claims that the mean number of miles driven annually, m, in its leased cars is less than 13280 miles. A random sample of 150 cars leased from this firm had a mean of 12584 annual miles driven. It is known that the population standard deviation of the number of miles driven in cars from this firm is 3300 miles. Is there support for the firm's claim at the 0.1 level of significance?

Perform a one-tailed test. Then fill in the table below.

Carry your intermediate computations to at least three decimal places, and round your responses as specified in the table.

Ho:
H1:
type of test statistic (F, t, z, chi square) degrees of freedom__

The value of test statistic:Round to at least two decimal places ___

The p-value round to at least two decimal places__

Can we support the leasing firms claim that the mean number of miles driven annually is less than 13280 miles? yes or no

Reference no: EM13106618

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