Question

based on survey results, the mean amount of credit card debt for u.s. adults under 35 is $8,724. this point estimate would be unbiased and most accurate if the survey were based on which of the following? a. a random sample of 1,500 u.s. adults under 35 b. a random sample of 2,800 u.s. adults under 35 c. a random sample of 3,000 u.s. college students d. a national television news station poll with 3,500 responses

Explanation:

A larger random sample from the target population (U.S. adults under 35) gives a more accurate and unbiased point - estimate. Option C only includes college students which is a subset and may not be representative. Option D is a poll from a news station and may have self - selection bias. Between A and B, B has a larger sample size from the correct target population.

Answer:

B. A random sample of 2,800 U.S. adults under 35