Mathematics, 16.06.2021 18:40, Jasten
The leader of two postpartum women's support groups is interested in the depression levels of the women in her groups. She administers the Center for Epidemiologic Studies Depression Scale (CES-D) screening test to the members of her groups. The CES-D is a 20-question self-test that measures depressive feelings and behaviors during the previous week.
The mean depression level from the screening test for the 6 women in the first group is μ1=15; the mean depression level for the 12 women in the second group is μ2= 12.
Without calculating the weighted mean for the combined group, you know that the weighted mean is:
a. Midway between 15 and 12
b. Closer to 15 than to 12
c. Closer to 12 than to 15
Compute the weighted mean.
The support group leader realizes that she should also screen for alcohol abuse, so she gives the women in her two groups the Michigan Alcohol Screening Test (MAST). The MAST is a 22-question self-test focusing on the use and abuse of alcohol. The first group has a mean score of μ1= 18. The second group has a mean score of μ2= 12.
Compute the weighted mean.
Answers: 1
Mathematics, 21.06.2019 19:30, jrassicworld4ever
Need now max recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a) the median of max’s data is 250 b) more than half of the data points max recorded were 177 centimeters. c) a data point chosen at random is as likely to be above the mean as it is to be below the mean. d) every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.
Answers: 1
Mathematics, 22.06.2019 00:10, abigaleschwartz
Answer asap and if you do you will get brainliest. catherine buys a gallon of ice cream from the store. after taking it home, she eats a fifth of a gallon of ice cream. her sister eats some of the ice cream as well. if two-thirds of the original amount of ice cream is left, then what fraction of a gallon of ice cream did her sister eat?
Answers: 2
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