44. a magazine surveyed readers and found tha...
44. a magazine surveyed readers and found that 175 of the 200 teenagers included in the survey spend at least two hours per night on the internet. the magazine then claimed that 80% of its readers use the internet each night. which statement about the claim is valid? a it is accurate since 175 out of 200 is greater than 80%. b. it is accurate because the magazine used a representative sample in its survey. c. it is not accurate because the sample may not have included both boys and girls. d. it is not accurate because only information from teenagers was used to make the claim.
Answer
# Explanation:
## Step1: Analyze the sample
The magazine surveyed only 200 teenagers to make a claim about all its readers. A sample of just teenagers is not representative of all readers.
## Step2: Evaluate each option
Option A and B assume the claim is accurate based on the proportion among teenagers, ignoring the non - representativeness of the sample. Option C is wrong as the sample is not representative. Option D is correct because using only information from teenagers to make a claim about all readers (who are likely to be of different age groups) is not valid.
# Answer:
D. It is not accurate because only information from teenagers was used to make the claim.