A clinical psychologist obtained a random sample of 102 high school students and from each he determined the number of hours a day they spent on Facebook (x) and their rated happiness on a seven-point scale (y). The mean and standard deviation of x were mx = 3 and sx = 1.5, respectively, and the estimated standard error of estimate was sest = 0.47. If the regression equation is 7.52 – 4.33(x), what is the 95% prediction interval for ynext when x = 1.5?
[–0.32, 0.08]
[2.65, 5.91]
[0.89, 1.16]
[0.08, 1.97]
