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A two-way ANOVA compares two exercise programs (A and B) and two exercise frequencies (twice a week and four times a week). The response variable is weight lost after 8 weeks of exercise. An interaction is present in the data when
(a) the mean weight loss is not the same for Program A and Program B.
(b) the mean weight loss under Program A is different for twice-weekly and four-times-weekly subjects. (c) the difference between the mean weight losses for Programs A and B is not the same for twice-weekly and fourtimes-weekly subjects.
A normal distribution with mean value 110 and standard deviation 15. Approximate the probabilities below. (Round all answers to four decimal places.)
you notice in your introductory psychology class that more women tend to sit up front and more men in the back. to
What is the probability (written as a percent) of drawing a Diamond card? What is the probability (written as a proportion) of drawing a face card
A t-test can be used to test the probability that the two means do not differ. The alternative is that the reaction times from the group treated with the drug will not be less than that from the control group.
q1. a small town has a population of 20000 people. among these 1000 regularly visit a popular local bar. a sample of
Compute the power of the previous test if the true proportion of adults having access to the internet in the population is 41%. What is the power if the true proportion is 42%? 43%?
A biologist with the Department of Agriculture is studying the growth of artichokes. She knows that the number of artichokes produced by each plant follows a distribution which is approximately normal.
transit administration light-rail is one of the safest modes oftravel with an accident rate of .99 accidents per
the american lighting company developed a new light bulb that it believes will last at least 700 hours on average. a
Determine the probability of exactly one success given Poisson distribution with mean of 2.0.
Create a sample frequency distribution for one of the variables. Choose either a simple or grouped frequency distribution and explain your choice.
a quiz cosists of 10 multiple-choice questions each with 6 possible answers. for someone who makes random guesses for
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