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Q. 1: An automobile industry uses a particular brand of automobile batteries that have their lifetimes approximately nor
Posted: Sun Oct 03, 2021 11:11 am
by answerhappygod
- Q 1 An Automobile Industry Uses A Particular Brand Of Automobile Batteries That Have Their Lifetimes Approximately Nor 1 (14.91 KiB) Viewed 99 times
Q. 1: An automobile industry uses a particular brand of automobile batteries that have their lifetimes approximately normally distributed, with a mean of 3.5 years and standard deviation of 0.5 years. If a random sample of 29 batteries has an average life of 3.4 years. Test the hypothesis that u = 3.5 years against the alternative, u # 3.5 years. Use 0.05 level of significance. (4 marks)