Mathematics, 27.06.2019 05:10 rkbilkhu457
12. a professor obtains sat scores and freshman grade point averages (gpas) for a group of n = 15 college students. the sat scores have a mean of m = 580 with ss = 22,400, and the gpas have a mean of 3.10 with ss = 1.26, and sp = 84. a. find the regression equation for predicting gpa from sat scores. b. what percentage of the variance in gpas is accounted for by the regression equation? (compute the correlation, r, then find r2.) c. does the regression equation account for a significant portion of the variance in gpa? use α = .05 to evaluate the f-ratio. gravetter, frederick j. statistics for the behavioral sciences (p. 556). cengage learning. kindle edition.
Answers: 2
Mathematics, 22.06.2019 03:30, kevenluna10oytivm
At the beginning of a call to the cable company, a message tells customers, "after you finish talking to our customer service representative, you will be asked to take a five-question survey about the level of service you recieved. it would be appreciated if you could stay on the line to answer the survey questions." what type of sampling is the cable company using?
Answers: 3
Mathematics, 22.06.2019 05:30, OrionGaming
The daily production of a company is modeled by the function p = -w^2 + 75w - 1200. the daily production, p, is dependent on the number of workers (w) present. if the break-even point is when p=0, what are the least and greatest number of workers the company must have present each day in order to break even? 50 points! will give brainliest!
Answers: 1
12. a professor obtains sat scores and freshman grade point averages (gpas) for a group of n = 15 co...
Mathematics, 28.05.2021 07:10
Mathematics, 28.05.2021 07:10
Mathematics, 28.05.2021 07:10