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Question: The AJ Fitness Center has surveyed 1,214 of its customers. Of particular interest is whether more than 60% of the customers who express overall service satisfaction with the club (represented by codes 4 or 5) are female. If this is not the case, the promotions director feels she must initiate new exercise programs that are designed specifically for women. Should the promotions director initiate the new exercise programs? Support your answer with the relevant hypothesis test utilizing a p-value to perform the test. The data are found in a data file called AJ Fitness 1a = 0.052.
In a sample of 476 adults selected randomly from one town, it is found that 9 of them have been exposed to a particular strain of the flu. Find the Pvalue for a test of the claim that the proportion of all adults in the town that have been exposed..
Do the confidence interval limits contain 0, indicating that there is not a significant difference between the times of the first and second trials?
When I repeat the regression but do a regression through the origin (i.e. no intercept), the correlation coefficient between x and u becomes -0.24117, and I am not sure why. I have to use the Pearson correlation coefficient formula to explain this..
in a raffle with 100 tickets 10 people buy 10 tickets each. ifthere are 3 winning tickets drawn at random find the
a six-sigma black belt quality engineer found that in a random sampl of 140 printed circuit boards 18 are defective due
seventy-eight percent of the light aircraft that disappear while in flight in a certain country are subsequently
Crime rate and population. Research by law enforcement agencies has shown that the crime rate is correlated with the U.S. population. Would you expect the correlation to be positive or negative? Explain.
In a series of seven games, the ?rst team to win four games wins the series. If the teams are evenly matched, what is the probability that the team that wins the ?rst game will win the series?
Estimate the regression parameters, the bottom water concentration for location with a surface water concentration of 0.5 mg/L, and draw the regression line on the same graph with the scatter diagram.
the owner of a grocery store finds that she sell 980 gallons of milk each week at 2.69 per gallon and 1220 gallons of
a newspaper finds that the mean number of typographical errors per page is four. find the probability that more than
In essence there are two basic ways of breaking down a project into plannable chunks: the use of a work breakdown structure or a product breakdown structure. Contrast the advantages and disadvantages of these approaches.
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