14.12 Internet use in Canada. A recent study used data from the Canadian Internet Use Survey

(CIUS) to explore the relationship between certain A variables and Internet use by individuals in Canada. The response variable refers to the use of the Internet from any location within the last 12 months. Explanatory variables included Age (years), Income (thousands of dollars), Location

(1=urban, 0=other) , Sex 3

(1=male, 0=female) , Education

(1=at least some postsecondary education, 0=other)

, Language

(1=English, 0=French) , and Children

(1=at least one child in household, 0=no Children)

. The following table summarizes the results:

Explanatory variable b Age −0.063 Income 0.013 Location 0.367 Sex −0.222 Education 1.080 Language 0.285 Children 0.049 Intercept 2.010 All but Children were significant at the 0.05 level.

a. Interpret the sign of each of the coefficients (except the intercept) in terms of the probability that the individual uses the Internet.

b. Compute the odds ratio for each of the variables in the table.

c. What are the odds that a French-speaking, 23-year-old male, living alone in Montreal and making

$50,000 a year his second year after college is using the Internet?

d. Convert the odds in part

(c) to a probability.