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Statistics Assignment | Professional Writing Services

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December 20th, 2019

A leasing firm claims that the mean number of miles driven annually, u , in its leased cars is less than 13100 miles. A random sample of 48 cars leased from this firm had a mean of 12658 annual miles driven. It is known that the population standard deviation of the number of miles driven in cars from this firm is 3460 miles. Assume that the population is normally distributed. Is there support for the firm’s claim at the 0.05 level of significance?

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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. (If necessary, consult a list of formulas.)

I need the answers to the following:

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The null hypothesis

the alternative hypothesis

the type of test statistic

the value of the test statistic

the critical value at 0.05 (rounded to three decimal places)

can we support the leasing firms claim that the mean number of miles driven annually is less than 13100 miles?

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