Each year, a diesel engine manufacturing plant tests a

Last updated: 8/11/2022

Each year, a diesel engine manufacturing plant tests a sample of twenty-five of their engines to make sure the horsepower is to specification. This year, the average was 2,538 horsepower, with a 99% confidence interval of [2,494,2,582]. If they do not change any processes for next year's manufacturing run, what is the probability that the average horsepower next year will be outside this range? 1% 0.1% 5% 10%