Mathematics, 20.05.2021 21:30 avagymnast421
Psychologists had a hypothesis that meditatio reduces work stress. Work stress is commonly measured by the
Psychological Strain Questionnaire (PSQ). The higher the PSQ score, the less stress the subject feels.
They randomized 200 full-time employees between a treatment group and a control group. The treatment group
was instructed to meditate for about 15 minutes twice per day over a period of 8 weeks. The subjects' PSQ
scores were gathered just before and right after the treatment period,
The results of the experiment showed that the mean change in PSQ scores of the treatment group is 15 points
greater than the mean change in PSQ scores of the control group. To test whether the results could be explained
by random chance, the researchers created the table below, which summarizes the results of 1000 re-
randomizations of the data (with differences between means rounded to the nearest 3 points)
According to the simulations, what is the probability of the treatment group's mean being higher than the
control group's mean by 15 points or more?
Cm be
Answers: 3
Mathematics, 21.06.2019 16:00
Pick the expression that matches this description: a polynomial of the 5th degree with a leading coefficient of 7 and a constant term of 6 (choice a) 7x^5+2x^2+6 (choice b) 7x^6β6x^4+5 (choice c) 6x^7βx^5+5 (choice d) 6x^5+x^4+7
Answers: 2
Mathematics, 21.06.2019 16:30
Rectangle pqrs has length a and width 4b. the x-axis bisects ps and qr what are the coordinates of the vertices
Answers: 2
Mathematics, 21.06.2019 20:00
Which fraction is equal to 1hole and 2/5? a.3/5 b.75 c.57 d.73
Answers: 2
Psychologists had a hypothesis that meditatio reduces work stress. Work stress is commonly measured...
Mathematics, 29.09.2020 14:01
Mathematics, 29.09.2020 14:01
Mathematics, 29.09.2020 14:01
Chemistry, 29.09.2020 14:01
Mathematics, 29.09.2020 14:01
Mathematics, 29.09.2020 14:01
Arts, 29.09.2020 14:01
World Languages, 29.09.2020 14:01
Social Studies, 29.09.2020 14:01
Mathematics, 29.09.2020 14:01