Question

A new machine on the market claims to cut the trees, on average, in 9 minutes....

A new machine on the market claims to cut the trees, on average, in 9 minutes. A random sample of 12 test runs on the new machine yielded a mean of 10 minutes with a standard deviation of 1.3.

Test the claim at 10% significant level.
Calculate the 96% confidence interval

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Answer #1

Test the claim at 10% significant level.

Calculate the 96% confidence interval

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