Help with all please The figure shows a scatterplot with the regression line. Th

Question

Help with all please

The figure shows a scatterplot with the regression line. The equation of the regression line is shown below. The data are for the 50 regions in Country A. The predictor is the percentage of smoke-free homes. The response is the percentage of high school students who smoke. Complete parts a and b. 4- Predicted Pct. Smokers= 48.011-0.341 (Pct. Smoke-free) 30- 10- 0- 40 50 60 70 80 90 Pct. Smoke-free a. Explain what the trend shows. Choose the correct answer below. A. The lower the percentage of smoke-free homes in a region, the lower the percentage of high school students who smoke tends to be B. The higher the percentage of smoke-free homes in a region, the lower the percentage of high school students who smoke tends to be ° C. Approximately 34% of the people in Country A do not smoke Approximately 34% of the people in Country A smoke. D b. Use he regression equation to predict the percentage o students in high school who smoke assuming ha ere are % smo e ee omes the region. Use 70 ·. (Round to the nearest integer as needed.)

Explanation / Answer

As per Chegg policy, we are advised to help in one question at a time. Moreover, Image - 2 & Image - 3 requires the data which is not here so i will only be attempting Image - 1.

Image - 1:

Given the regression equation is:

y = 48.011 - 0.341 (x)

For x = 70,

y = 48.011 - 0.341 (70)

y = 24.141

Answer = 24 % [Rounded off to the nearest whole number]

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