Testing Claims In Exercises 17 24 A Write The Claim Mathematically And Identify H And H B Find The Critical Value 1 (25.17 KiB) Viewed 40 times
Testing Claims In Exercises 17 24 A Write The Claim Mathematically And Identify H And H B Find The Critical Value 2 (19.24 KiB) Viewed 40 times
Testing Claims In Exercises 17-24, (a) write the claim mathematically and identify H, and H, (b) find the critical value(s) and identify the rejection region(s), (c) find the standardized test statistic t, (d) decide whether to reject or fail to reject the null hypothesis, and (e) interpret the decision in the context of the original claim. If convenient, use technology. For each claim, assume the population is normally distributed.
20. Battery Life A company claims that the mean battery life of their MP3 player is at least 30 hours. You suspect this claim is incorrect and find that a random sample of 18 MP3 players has a mean battery life of 28.5 hours and a standard deviation of 1.7 hours. Is there enough evidence to reject the claim at a = 0.01?
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