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1 point You measure the lifetime of a random sample of 64 tires of a certain brand. The sample mean is x = 50

1 point You measure the lifetime of a random sample of 64 tires of a certain brand. The sample mean is x = 50 months. Suppose that the lifetimes for tires of this brand follow a Normal distribution with unknown mean / and standard deviation o 5 months. A 90% confidence interval for is: = 49.8 to 50.2.

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