Hoping to get information that would allow them to negotiate new rates with their advertisers, Natural Health magazine phoned a random sample of 600 subscribers. 64% of those polled said they use nutritional supplements. Which is true?
I. The population of interest is the people who read this magazine. II. "64%" is not a statistic; it's the parameter of interest.
III. This sampling design should provide the company with a reasonably accurate estimate of the
Percentage of all subscribers who use supplements.
A) I and II only
B) II and III only
C) I and III only
D) I, II, and III
E) I only

Question

Quizplus · Accepted Answer

I is true because the population of interest is the subscribers of Natural Health magazine.

II is true because "64%" refers to the parameter of interest (proportion of subscribers who use nutritional supplements), not a statistic.

III is likely true because the survey was a random sample of 600 subscribers, which should provide a reasonably accurate estimate of the percentage of all subscribers who use supplements. However, the accuracy depends on factors such as the representativeness of the sample and the potential for nonresponse bias.

Hoping to Get Information That Would Allow Them to Negotiate