The figure shows a scatterplot with a regression line. The data are for the 50 regions of a particular country. The predictor is the percentage of adults who smoke, the response is the percentage of high school students who smoke. Complete parts (a) and (b) below. Predicted Pct. Smokers = 2.415+ 1.113 (Pct. Adult Smoke) % of Students Who Smoke 45- Q 40- 35- 30- 25- 20- ✓ 15- 10- 5+ 10 15 20 25 Percentage of Adults Who Smoke 30 a. Explain what the trend shows. Choose the correct answer below. OA. For each percent increase in the percentage of high school students who smoke in a region, the percentage of adults in the region who smoke tends to increase by 2.415. OB. For each percent increase in the percentage of adults who smoke in a region, the percentage of high school students in the region who smoke tends to increase by 2.415. C. The higher the percentage of adults who smoke in a region, the lower the percentage of high school students who smoke tends to be. OD. The higher the percentage of adults who smoke in a region, the higher the percentage of high school students who smoke tends to be. b. Use the regression equation to predict the percentage of high school students who smoke, assuming that 25% of adults in the region smoke. Use 25, not 0.25. %. The percentage of high school students who smoke, assuming that 25% of adults in the region smoke, is about (Round to the nearest percent as needed.)
The figure shows a scatterplot with a regression line. The data are for the 50 regions of a particular country. The predictor is the percentage of adults who smoke, the response is the percentage of high school students who smoke. Complete parts (a) and (b) below. Predicted Pct. Smokers = 2.415+ 1.113 (Pct. Adult Smoke) % of Students Who Smoke 45- Q 40- 35- 30- 25- 20- ✓ 15- 10- 5+ 10 15 20 25 Percentage of Adults Who Smoke 30 a. Explain what the trend shows. Choose the correct answer below. OA. For each percent increase in the percentage of high school students who smoke in a region, the percentage of adults in the region who smoke tends to increase by 2.415. OB. For each percent increase in the percentage of adults who smoke in a region, the percentage of high school students in the region who smoke tends to increase by 2.415. C. The higher the percentage of adults who smoke in a region, the lower the percentage of high school students who smoke tends to be. OD. The higher the percentage of adults who smoke in a region, the higher the percentage of high school students who smoke tends to be. b. Use the regression equation to predict the percentage of high school students who smoke, assuming that 25% of adults in the region smoke. Use 25, not 0.25. %. The percentage of high school students who smoke, assuming that 25% of adults in the region smoke, is about (Round to the nearest percent as needed.)
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Question
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Part and b.
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Transcribed Image Text:The figure shows a scatterplot with a regression line. The data
are for the 50 regions of a particular country. The predictor is
the percentage of adults who smoke, the response is the
percentage of high school students who smoke. Complete
parts (a) and (b) below.
Predicted Pct. Smokers = 2.415+ 1.113 (Pct. Adult Smoke)
% of Students Who Smoke
45-
Q
40-
35-
30-
25-
20-
✓
15-
10-
5+
10
15 20 25
Percentage of Adults Who Smoke
30
a. Explain what the trend shows. Choose the correct answer below.
OA. For each percent increase in the percentage of high school students who smoke in a region, the percentage of adults in the region who smoke tends to increase by 2.415.
OB. For each percent increase in the percentage of adults who smoke in a region, the percentage of high school students in the region who smoke tends to increase by 2.415.
C. The higher the percentage of adults who smoke in a region, the lower the percentage of high school students who smoke tends to be.
OD. The higher the percentage of adults who smoke in a region, the higher the percentage of high school students who smoke tends to be.
b. Use the regression equation to predict the percentage of high school students who smoke, assuming that 25% of adults in the region smoke. Use 25, not 0.25.
%.
The percentage of high school students who smoke, assuming that 25% of adults in the region smoke, is about
(Round to the nearest percent as needed.)
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