Each year a diesel engine manufacturing plant tests a sample

Last updated: 3/31/2023

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 O 1 0 0 1 O 5 10