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The effect of exercise and diet on body weight is being studied. Researchers at a major university have a list of 2,500 women students aged 18-25 willing to participate in a study involving controlled diets and amounts of exercise for a six week period. Participants in the study will receive $300 as a compensation for the time spent in the study.
a. Describe how a simple random sample of 30 women can be selected from the pool of 2,500 available for the study. b. Comment on whether the results of this study can be generalized to all adult women in the United States.
High principal has decided to give an award to any student who scores in the top 10% of statewide scores. How high should a student score be to win this award? Give your answer to the nearest integer.
there is a 25 chance that a fuse of a certain type is defective. approximate the probability of having more than or
Compute the pdf of continuous random variable Z where Z = X + Y and X is a continuous random variable uniformly distributed on [0, 2] and Y is a continuous random variable uniformly distributed on [0, 4]. Assume that X and Y are independent.
compare the mean for the heights of males and the mean for the heights of females in these data. compare the values and
Twenty five young people were sampled in a survey to be used in determining the average expenditures (in dollars) for an evening of dining out.Create a cumulative relative frequency Ogive chart.
Customers with Internet access, (b) between 97% and 99% of the customers with Internet access, and (c) fewer than 97% of the customers with Internet access?
The goal is to get people thinking about how they can actually use correlation and regression in their real life, and where and how can they can really benefit from these techniques?
a study of religious practices among college students interviewed a sample of 245 students 157 of whom stated they pray
a researcher randomly selects 6 fathers who have adult sons and records the fathers and sons heights to obtain the data
Students that are in the top 5% will receive a 20% off coupon at the "Crazy" cafeteria. What is the minimum number of attendance days that you should have in order to receive such discount?"
your task is to interview a representative sample of attendees to a large concert.the schedule includes 200 live
consider 50 independent flips of a coin having probability 0.4 of landing on heads. we say that a changeover occurs
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