SOLUTION: A leasing firm claims that the mean number of miles driven annually, , in its leased cars is less than miles. A random sample of cars leased from this firm had a mean of annual
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-> SOLUTION: A leasing firm claims that the mean number of miles driven annually, , in its leased cars is less than miles. A random sample of cars leased from this firm had a mean of annual
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Question 320118: A leasing firm claims that the mean number of miles driven annually, , in its leased cars is less than miles. A random sample of cars leased from this firm had a mean of annual miles driven. It is known that the population standard deviation of the number of miles driven in cars from this firm is miles. Assume that the population is normally distributed. Is there support for the firm's claim at the level of significance?
Perform a one-tailed test. Then fill in the table below.
What is the null hypothesis?
What is the alternative hypothesis?
What is the type of test statistic (Z, T, Chi Square)
What is the value of the test statistic (round at least 3 decimal places)
What is the critical value at the 0.05 level of significance (round at least 3 decimal places)
Can we support the leasing firms claim that the mean number of miles driven annually is less than 13280 miles?
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