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A Coach in a large secondary school thinks that ballet training will improve his football teams scoring average/game. He has half of the team members take ballet lessons before the season. The other half of the team does not take such lessons. He then compares mean scoring averages of those with ballet training to those without ballet training:
To test his hypothesis, the Coach should have which of the following groups take ballet training?
a) the best players
b) volunteers
c) the poorest players
d) poorly coordinated players
e) none of the above
a study of the net sales of a sample of small corporations revealed that the mean net sales is 2.1 million the median
Management wishes to test whether each shopper is spending an equal amount of money at each store. Calculate the sums of squares SS(total), SS(factor), and SS(error)
One in eight adults says he or she has no trouble sleeping at night. You randomly select six adults and ask if he or she has no trouble sleeping at night.
1. the epa wants to test randomly selected sample of n water specimens and test the mean daily rate of pollution
A standard deviation of mg/dL. What is Mrs. Brown's cholesterol level? Carry your intermediate computations to at least four decimal places. Round your answer to at least one decimal place.
Does Lavastatin reduce the risk of heart attack? In a Texas Study, researchers gave Lovastatin to 2,325 people, and a inactive substitute to 2,081 people, with an average age of 58. After 5 years, 57 of the lovastatin group suffered a heart attack..
the lifetime in hours of a certain kind of radio tube is a random variable with the probability density function given
Find the premium if the same income is to be paid monthly instead of annually, assuming payments are made (a) at the beginning of each month, (b) at the end of each month.
Compute (by hand) the N, Mean, Standard Deviation, Confidence Interval, and Z score for the variables "company market rate" and "accounting rate" respectively in the AccRet.txt dataset
brian smith sells a set of movie posters 12 and baseball cards 8 at a local flea market. on last sunday brians total
Find P-Value with 0.05 significance level, and state the conclusion about the null hypotheses (reject or fail to reject) With H1: p is not equal to 3/4, the test statistic is z=0.35
Four are slow songs, and six are fast songs. Each song is to be played only once. In how many ways can the disc jockey play the 10 songs if. The songs can be played in any order.
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