A research company polled a random sample of 978 teens about Internet use. 53% of those teens reported going online several times a daya fact of great interest to advertisers.

3) Explain what this standard error means in the context of this situation

a) The standard error is the best estimate of the margin of error of the poll, which measures the amount of variation in the sample size expected to be seen from sample to sample when 978 teens are asked the polling question.

b) The standard error is the best estimate of the margin of error of the poll. The researchers can be confident that the difference between p and p is not greater than the standard error.

c) The standard error is the best estimate of the standard deviation of the sampling distribution of the proportions, which measures the amount of variation in the sample proportion expected to be seen from sample to sample when 978 teens are asked the polling question.