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Question (9): A manufacturer of car batteries claims that his product will last at least 4 years on average. A sample of
Posted: Sun Sep 05, 2021 5:02 pm
by answerhappygod
- Question 9 A Manufacturer Of Car Batteries Claims That His Product Will Last At Least 4 Years On Average A Sample Of 1 (20.84 KiB) Viewed 500 times
Question (9): A manufacturer of car batteries claims that his product will last at least 4 years on average. A sample of 41 is taken and the mean and standard deviation are found. The test statistic is calculated to be -1.656. Using a 5% level, a) Specify the null and alternative hypothesis? b) What is the appropriate test statistic? c) What is the final decision (accept or reject the null hypothesis)? (8 points)