High School

A television newscaster from a 24-hour news station wants to estimate the number of hours per day its viewers watch programming on this channel. The newscaster randomly selects 100 viewers and asks them how many hours per day they watch this station. The newscaster constructs an 85% confidence interval for the true mean number of hours viewers watch this station. Which of the following would decrease the margin of error?

Answer :

Answer:

This isn't the best worded question but from what I understand a larger sample size decreases the margin of error. If he would like a more accurate answer a larger sample size of the viewers will give more accurate answers.

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