On a highway, a random sample is taken of the speed, in mph, of 50 cars. A mean speed of 61.8 mph is calculated with a margin of
error of +2.3 for a 95% confidence interval What is the interval estimate of the population mean? A) 58.7 <h<64.9 B)59.5<h<61.8 C)59.5<h<64.1 D)61.8<h<64.1