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An aerobic dance teacher wanted to know whether two workouts per week of 30 minutes each were enough to increase VO2max in sedentary middle- aged women. The teacher proposed to compare VO2max of some women who had been in the aerobic dance classes for 6 months with VO2max of a group of sedentary women. Based on related literature, the teacher estimated that VO2max would be about 7 milliliters per kilogram per minute higher in the aerobic dancers, with a standard deviation of 4.5. If this is a fair estimate of the data to be expected, how many women must she test in each group to produce a power coefficient of .90 at α=.05?
Research department tells you that a annual sales for a typical coffee shop located in the West Loop are normally distributed with mean (µ) $100,000
its believed that that the mean number of dogs owned by dog-owning households is 2.1 dogs. an srs of 35 dog owners has
Why then does it matter whether we assume straight-line or MACRS depreciation when we assess project NPV?
Explain the difference between a left-tailed, two-tailed, and right-tailed test with examples from your own experience for each.
Conduct post hoc comparisons with the LSD method. Which groups differ significantly at α = 0.05?
What sample size can you do with this budget, and want is the MOE associated with this sample size?
Some soccer games are not thrilling events to watch. Therefore, no soccer games are thrilling events to watch.
during a national debate on changes to health care a cable news service performs an opinion poll of 470 small-business
calculate the mean or expected value for the number of retransmissions and calculate the standard deviation for the number of retransmissions.
On the first exam your score was a 73%, on the second it was an 73%. The first exam counts for 20% of your grade and the second exam counts for 28% of your grade. What is your grade in the class so far?
suppose x has density function 3x-4 for x is greater than or equal to 1.a find a function g so that gx is uniform on
(a) At the 5 % significance level, test the hypothesis that the new conditions grow no better plants.
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