Regarding the previous question about number of TVs and life expectancy:
a. Identify the observational units.

A. People
B. Number of TVs per 1,000 people
C. Countries
D. Life expectancy

b. Identify the explanatory variable.
A. People
B. Number of TVs per 1,000 people
C. Countries
D. Life expectancy

c. The explanatory variable is ________ (categorical/quantitative).

d. Identify the response variable.

A. People
B. Number of TVs per 1,000 people
C. Countries
D. Life expectancy

e. The response variable is ________ (categorical/quantitative).

Data from previous exercise

Based on this study, is it reasonable to conclude that by sending TVs to countries with lower life expectancies, we can increase their inhabitants’ lifetimes? If yes, explain how. If no, give an alternative explanation for the association between number of TVs and life expectancy.

This question contain questions about an analysis of data on a sample of 22 countries that shows a strong positive association between the average life expectancy in the country and the number of TVs per 1,000 people in the country, that is, that countries that have more TVs per 1,000 people also have higher average lifetimes.