Mathematics, 20.10.2020 20:01 paiged55
Hypothesis tests for a population mean with standard deviation known
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At a large company, the attitudes of workers are'regularly measured with a standard test. The scores on the test are from 0 to 100 with higher score indicating greater satisfaction. The mean score over all company's employees was 74, with a standard deviation of 8. Some time ago, the company adopted the policy that workers could spend one day per week working form home. After the policy had been in place for some time, a random sample of 80 workers was given the test. The sample mean was 76. Assume that the standard deviation is still 8. Can we conclude that the mean level of satisfaction is different since the policy change at the alpha = 0.05 level?
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Mathematics, 21.06.2019 12:30
When a formula is solved for a particular variable, several different equivalent forms may be possible. if we solved a=1/2bh for h, one possible correct answer is h=2a/b . which one of the following is not equivalent to this? a. h= 2(a/b) b. h= 2a(1/b) c. h= a/1/2b d. h= 1/2a/b
Answers: 1
Mathematics, 21.06.2019 17:20
Read the equations in the table below. then drag a description of the situation and a table to represent each equation. indicate whether each of the relationships is proportional or non-proportional.
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Mathematics, 21.06.2019 22:00
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Mathematics, 22.06.2019 04:00
Which statements are true about the linear equation y> 3/4x-2? check all that apply
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Hypothesis tests for a population mean with standard deviation known
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