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A leasing firm claims that the mean number of miles driven annually, u, in its leased cars is less than 13560 miles. A random sample of 30 cars leased from this firm had a mean of 12219 annual miles driven. It is known that the population standard deviation of the number of miles driven in cars from this firm is 3060 miles. Assume that the population is normally distributed. Is there support for the firm's claim at the 0.05 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. (If necessary, consult a list of formulas.) The null hypothesis: Но : х The alternative Н hypothesis: OSO The type of test statistic: (Choose one) O#0 ロ<ロ O>O The value of the test statistic: (Round to at least three decimal places.) The p-value: (Round to at least three decimal places.) Can we support the leasing firm's claim that the mean number of miles driven Yes No annually is less than 13560 miles?

A leasing firm claims that the mean number of miles driven annually, u, in its leased cars is less than 13560 miles. A random sample of 30 cars leased from this firm had a mean of 12219 annual miles driven. It is known that the population standard deviation of the number of miles driven in cars from this firm is 3060 miles. Assume that the population is normally distributed. Is there support for the firm's claim at the 0.05 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. (If necessary, consult a list of formulas.) The null hypothesis: Но : х The alternative Н hypothesis: OSO The type of test statistic: (Choose one) O#0 ロ<ロ O>O The value of the test statistic: (Round to at least three decimal places.) The p-value: (Round to at least three decimal places.) Can we support the leasing firm's claim that the mean number of miles driven Yes No annually is less than 13560 miles?

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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A leasing firm claims that the mean number of miles driven annually, u, in its leased cars is less than 13560 miles. A random sample of 30 cars leased from this firm had a mean of 12219 annual miles driven. It is known that the population standard deviation of the number of miles driven in cars from this firm is 3060 miles. Assume that the population is normally distributed. Is there support for the firm's claim at the 0.05 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. (If necessary, consult a list of formulas.) The null hypothesis: Но : х The alternative Н hypothesis: OSO The type of test statistic: (Choose one) O#0 ロ<ロ O>O The value of the test statistic: (Round to at least three decimal places.) The p-value: (Round to at least three decimal places.) Can we support the leasing firm's claim that the mean number of miles driven Yes No annually is less than 13560 miles?
Transcribed Image Text:A leasing firm claims that the mean number of miles driven annually, u, in its leased cars is less than 13560 miles. A random sample of 30 cars leased from this firm had a mean of 12219 annual miles driven. It is known that the population standard deviation of the number of miles driven in cars from this firm is 3060 miles. Assume that the population is normally distributed. Is there support for the firm's claim at the 0.05 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. (If necessary, consult a list of formulas.) The null hypothesis: Но : х The alternative Н hypothesis: OSO The type of test statistic: (Choose one) O#0 ロ<ロ O>O The value of the test statistic: (Round to at least three decimal places.) The p-value: (Round to at least three decimal places.) Can we support the leasing firm's claim that the mean number of miles driven Yes No annually is less than 13560 miles?
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