A random sample of new members of a large downtown fitness club was selected, and tracked over six months. Of the 60 members who joined the club to participate in fitness classes, 38 were still working out regularly six months after joining. Of the 80 members who joined to work out with a personal trainer, 60 were still working out regularly six months after joining. At the 2.5% level of significance, is there evidence of a difference in the proportion of new members still working out regularly six months after joining the club when comparing those who attend fitness classes and those who work out with a personal trainer?
Answer to relevant QuestionsRe-do Exercise 6 above as a Chi-square test. Did you get the same answer? Did you expect to? In exercise A random sample of new members of a large downtown fitness club was selected, and tracked over six months. Of the 60 ...If appropriate, test to see whether there is evidence of a positive relationship between the number of sales contacts and sales for the Hendrick Software Sales Company. Use α = 0.05. Interpret the coefficient of determination for the data set of total revenues and total numbers of employees for the top 25 global research organizations. Given this number, can you conclude that the way to increase revenues ...Check that the requirements for the theoretical model are met for the data on monthly incomes and monthly spending on restaurant meals. Are there any outliers? Are there any influential observations? Check the requirements for regression for the data set of actual and recorded inventory values for Aries Car Parts from Exercise 15.When the auditor examined the relationship, he noticed two outliers, for observations 1 and ...
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