Recently in a large random sample of teens a proportion of 0.76 teens said they send text messages to friends. the margin of error for a 98% confidence interval was 0.030. (a) what is the sample statistic for the proportion of teens who send text messages to friends

The following data has been provided:
p = 0.76
Margin of error at 98% confidence = E = 0.030

The point estimate for proportion of of teens who send the text message = p = 0.76

The interval estimate for the proportion of teens who send the text message will be in the range:
( p - E, p + E)

p - E = 0.76 - 0.030 = 0.730
p + E = 0.76 + 0.030 = 0.790

Thus with 98% confidence we can say, the population proportion of teens who send the text message is between 0.730 and 0.790.