l Verizon 12:53 PMM * 74% webwork.pcc.edu (1985-198... Ep9-The....Ep8-The. Membe
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l Verizon 12:53 PMM * 74% webwork.pcc.edu (1985-198... Ep9-The....Ep8-The. Members. The King's... Grades weBWO- L Verizon 1 hemewokScatterplots and Linear Regression: Sets Scatterplo Problem 18 and Linear Previous Problem Problem List Next Problem Results for this submission User Answer Preview Result Grades 1.72 0.157 0.157 $8.49 $8.49 correct Problem 1 At least one of the answers above is NOT correct. Problem 2 (1 point) The amounts of 6 restaurant bills and the corresponding amounts of the tips are given in the table below. Problem 3 Problem 4 Bi 43.58 49.72 97.34 64.30 88.01 32.98 Tip 5.50 5.2816.00 7.70 10.00 4.50 Problem 5 Find the following: Problem 6 The regression equation for predicting tip from bill is 1.72 Problem 7 157 T. Problem 8 If the amount of the bill is $65, the best prediction for the amount of the tip is Problem 9 $8.49 Note: You can earn partial credit on this problem. Preview My Answers Submit Answers Your score was recorded. You have attempted this problem 15 times. You received a score of 33% for this attempt. Your overall recorded score is 33%. 13 14Explanation / Answer
Independent variable, X: Bill
Dependent variable, Y: tip
Following is the output of regression analysis:
The regression equatio is
y' = -1.7224+0.1579 *x
For X = 65 the predicted amount is
y' = -1.7224+0.1579 * 65 = 8.5411
Answer: $8.54
SUMMARY OUTPUT Regression Statistics Multiple R 0.930086073 R Square 0.865060103 Adjusted R Square 0.831325129 Standard Error 1.779127991 Observations 6 ANOVA df SS MS F Significance F Regression 1 81.1671477 81.1671477 25.64282684 0.007161068 Residual 4 12.66118563 3.165296408 Total 5 93.82833333 Coefficients Standard Error t Stat P-value Lower 95% Upper 95% Intercept -1.722424894 2.082950334 -0.826915969 0.454759571 -7.505622153 4.060772365 Bill, X 0.157780835 0.031158124 5.063874687 0.007161068 0.071272014 0.244289656Related Questions
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