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A local politician, running for reelection, claims that the mean prison time for…continues

A local politician, running for reelection, claims that the mean prison time for car thieves is less than therequired 6 years. A sample of 80 convicted car thieves was randomly selected, and the mean length of prisontime was found to be 5 years and 6 months, with a standard deviation of 1 year and 3 months. At ? = 0.05, test the politician's claim.

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