Mathematics, 13.12.2019 22:31 hello4540
D" size batteries produced by mnm corporation have had a life expectancy of 87 hours. because of an improved production process, the company believes that there has been an increase in the life expectancy of its "d" size batteries. a sample of 36 batteries showed an average life of 88.5 hours. assume from past information that it is known that the standard deviation of the population is 9 hours.
(a) use a 0.01 level of significance, and test to determine if there has been an increase in the life expectancy of the "d" size batteries.
(b) what is the p-value associated with the sample results? what is your conclusion, based on the p-value?
Answers: 1
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D" size batteries produced by mnm corporation have had a life expectancy of 87 hours. because of an...
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