A local politician, running for reelection, claims that the mean prison time for car thieves is less than the
required 4 years. A sample of 80 convicted car thieves was randomly selected, and the mean length of prison
time was found to be 3 years and 6 months, with a population standard deviation of 1 year and 3 months. At $\alpha$ α = 0.05, test the politicianʹs claim.

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The Answer of A local politician, running for reelection, claims that the mean prison time for car thieves is less than the
required 4 years. A sample of 80 convicted car thieves was randomly selected, and the mean length of prison
time was found to be 3 years and 6 months, with a population standard deviation of 1 year and 3 months. At $\alpha$ α = 0.05, test the politicianʹs claim.

A Local Politician, Running for Reelection, Claims That the Mean α\alphaα

A Local Politician, Running for Reelection, Claims That the Mean $\alpha$