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Chapter 3: Q T3.9. (page 216)

The scatterplot shows the relationship between the number of people per television set and the number of people per physician for 40 countries, along with the least-squares regression line. In Ethiopia, there were 503 people per TV and 36,660 people per doctor. Which of the following is correct?

a. Increasing the number of TVs in a country will attract more doctors.

b. The slope of the least-squares regression line is less than 1.

c. The correlation is greater than 1.

d. The point for Ethiopia is decreasing the slope of the least-squares regression line.

e. Ethiopia has more people per doctor than expected, based on how many people it has per TV.

Short Answer

Expert verified

The correct option is (e).

Step by step solution

01

Given information

02

Explanation

The data points are above the regression line in the preceding plot, indicating that the actual individual per person is smaller than the projected people per doctor. Option (e) appears to be the most appropriate of the possibilities presented. Hence, the correct option is (e).

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