Recall that psychologists used multiple regression to model desire to have cosmetic surgery (y) as a function of gender (x1), self-esteem (x2), body satisfaction (x3), and impression of reality TV (x4). The SPSS printout below shows a confidence interval for E(y) for each of the first five students in the study.
a. Interpret the confidence interval for E(y) for student 1.
b. Interpret the confidence interval for E(y) for student 4.

For Information: Refer to the Body Image: An International Journal of Research (March 2010) study of the impact of reality TV shows on one's desire to undergo cosmetic surgery, Exercise 12.17.

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STUDENT DESIRE GENDER SELFESTM BODYSAT IMPREAL Lower95CL Mean U 24 13.42 13.56 13.42 8.79 15.18 14.31 14.55 14.56 10.89 17.34 13 18