Chap 17-20 Parts a, b, c are a continuation of the Chap 17 problem from the prev

Question

Chap 17-20 Parts a, b, c are a continuation of the Chap 17 problem from the previous page and parts d, e and f cover Chap 20 material.) Here's the multiple regression equation for the 425 females who responded to the same survey (from the last problem): Predicted Shoe Size-9.70.225* Height 0.023* Weight a. One woman listed her height as 55 and her weight as 120 lbs. What does the regression equation predict her shoe size to be? Round to one decimal place. 5.4 puter's answer now shown above. You are correct. receipt no. is 150-6677 b. Her actual shoc size is S.5. What is her residual? 0.1 puter's answer now shown above. You are correct. receipt no. is 150-2499 2 c. Judging from the correlation matrix below, do you think the slope for Height in the simple regression equation: Shoe Size- (slope) Height +intercept is the same as 0.225, the slope for height in the multiple regression equation given above? Yes No, it would be smaller No, it would be bigger It's impossible to know unless you know the SD of both variables Submit Answer Tries 0/2 Height Weight Shoc Size Height1.000 0.3795 0.6398 Weight 0.3795 1.000 0.6199 Shoc Size 0.6398 0.6199 1.000 The following questions cover Chapter 20

Explanation / Answer

a) SHoe size = -9.7+0.225*55+0.023*120=5.435

b) Residual = 5.5-5.435 = 0.065

c) No it would be bigger.

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