Mathematics, 09.10.2019 20:00 WOLFIEPOOF
Batteries produced by a manufacturing company have had a life expectancy of 135 hours. because of an improved production process, the company believes that there has been anincreasein the life expectancy of its batteries. a sample of 42 batteries showed an average life of 140 hours. from past information, the standard deviation of the population is known to be 24 hours. a. start by writing down the null and alternative hypotheses. b.next, calculatethe relevant test statistic. c.what conclusion can be made at the .10 level of significance? make sure to interpret in words.
Answers: 3
Mathematics, 21.06.2019 15:50
Create and solve a linear equation that represents the model, where squares and triangles are shown evenly balanced on a balance beam. assume the weight of a square is 1 unit and the weight of a triangle is unknown.
Answers: 3
Mathematics, 21.06.2019 16:50
Proceed as in example 3 in section 6.1 to rewrite the given expression using a single power series whose general term involves xk. β n(n β 1)cnxn β 2 n = 2 β 4 β ncnxn n = 1 + β cnxn n = 0
Answers: 1
Mathematics, 22.06.2019 03:30
Sections of prefabricated woods are each 5 1/3 feet long, how long are 7 1/2 sections placed end to end?
Answers: 3
Batteries produced by a manufacturing company have had a life expectancy of 135 hours. because of an...
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