Mathematics, 21.09.2019 04:20 hectorgonzalejr333
a sample of 126 corporate managers and another sample of 168 college professors produced mean job-related stress scores of 7.35 for the managers and 6.86 for the professors. suppose that the standard deviations of the stress scores are 1.12 for the managers and 1.82 for the professors. the null hypothesis is that the mean stress scores are the same for corporate managers and college professors, while the alternative hypothesis is that the mean stress score for managers is different from the mean stress score for professors. the significance level for the test is 1%. what are the critical values of z?
Answers: 1
Mathematics, 21.06.2019 12:50
Write a polynomial function f of least degree that has rational coefficients, a leading coefficient of 1, and the given zeros. 1, 2−√3
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Mathematics, 21.06.2019 13:00
In a box lenght 1m breadth 60 cm and height 40 cm small rectangular packets of dimension 5 cm into 8 cm into 10 cm are packed. how many such small packets can be packed in the big box?
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Mathematics, 21.06.2019 23:00
Assume that there is a 11% rate of disk drive failure in a year. a. if all your computer data is stored on a hard disk drive with a copy stored on a second hard disk drive, what is the probability that during a year, you can avoid catastrophe with at least one working drive? b. if copies of all your computer data are stored on four independent hard disk drives, what is the probability that during a year, you can avoid catastrophe with at least one working drive?
Answers: 2
a sample of 126 corporate managers and another sample of 168 college professors produced mean job-re...
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