Question

From 2005 to 2015, an intensive antismoking campaign has been sponsored by the U.S federal government. Suppose in both years, the American Cancer Society randomly and independently sampled 2,000 adults. In 2005, they discovered 418 of the 2,000 sampled defined themselves as smokers. In 2015, they discovered 302 of the 2,000 sampled defined themselves as smokers. Define the population parameter in context in one sentence.

Answer 1

The population parameter is P – P2.

Explanation:

Since the anti-smoking campaign has been conducted from 2005 to 2015 so let the proportion of adult smokers in 2005 is “P1” and Let the proportions of adult smokers in 2015 is “P2”. However, the difference between the two population proportions is known as the population parameter of interest i.e. P - P2.