Fill in the blank. If both the sample standard deviation, s, and the population standard deviation, , are computed for the same data set, they will tend to be closer together if the data set is ___________.
Fill in the blank(s) with correct word
Question 2
A researcher wished to assess the importance of exercise in weight-loss programs. 412 people, all considered to be at least 20 pounds overweight, volunteered to participate in a study. The participants were randomly assigned to one of two groups.
Over a two-month period, the first group followed a particular diet but were instructed to perform no exercise other than walking. The second group followed the same diet but also performed aerobic exercise for one hour each day. At the end of the two months, the weight loss of each participant was recorded. The average weight loss was calculated for each group and it was found that the average weight loss for the second group was significantly greater than the average weight loss for the first group.
A) Designed experiment B) Observational study
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The level of future emissions is closely linked to the rate of population growth
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