Callt im (formula-y- Residuala 2 1 .410 1 \" 762-3. 172 Coetticients: (Intercept

Question

Callt im (formula-y- Residuala 2 1 .410 1 " 762-3. 172 Coetticients: (Intercept) -1.4426 .6 Estimate Std. Error t value Pr () 4.6493 -0.310 .80s o.5164 0.2105 0.046 o.553 Residual atandard exror: 3.893 on 1 degrees of free Multiple R-squared: 0.4171, Adjusted -0.165e R-squared: F-statiatic: 0.7155 on 1 and 1 DE, p-value: 0.553 If y is considered the response variable, what would be slope of the fitted regression line? (a) -1,4426 (b) 0.5164 (c) 3.893 (d) 04171 (e) Unable to determine without more information 13. This linear regression output implies that the sample correlation between the response variable y explanatory variable x is equal to which of the following? and the (a) -0.1658 (b) 0.4171 (c) 0.5164 (d) 0.6458 (e) There is no way to determine the sample correlation from the regression output 14. Given that i = 6.666667, what is the value of y? (a) 1.5441 (b) 2.0000 (c) 2.1420 (d) 2.2366 (e) 2.5497

Explanation / Answer

Page 1:

12. Option (b) is correct. Slope = 0.5164

13. Option (b) is correct. rxy = 0.4171

14. Option (b) is correct, ybar = 2.00006

Page 2:

20.Option (a) is correct

20.Option (d) is correct. Required prob. = 0.04057

21. Option (d) is correct. Ans. 10c2 = 45

22 . Option (e) is correct. Ans 3c2 / 2^3 =0.375

23. Opation (a) is correct. Ans. P(3 heads) / P(Atleast 1 head) = (4c3/16) / (1 - 4c0/16) = 4/15 = 0.266666

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