Protecting the Environment. A survey was conducted in Canada to ascertain public opinion about a major national park region in the Banff-Bow Valley. One question asked the amount that respondents would be willing to contribute per year to protect the environment in the Banff-Bow Valley region. The following frequency distribution was found in an article by J. Ritchie et al. titled “Public Reactions to Policy Recommendations from the Banff-Bow Valley Study” (Journal of Sustainable Tourism, Vol. 10, No. 4, pp. 295–308).

Contribution ($) Frequency 0 85 1–50 116 51–100 59 101–200 29 201–300 5 301–500 7 501–1000 3 For a respondent selected at random, let A = event that the respondent would be willing to contribute at least $101, B = event that the respondent would not be willing to contribute more than $50, C = event that the respondent would be willing to contribute between $1 and $200, and D = event that the respondent would be willing to contribute at least $1.

Describe the following events in words, and determine the number of outcomes (respondents) that make up each event.

a. (not D)

b. (A & B)

c. (C or A)

d. (B & D)