Time for a professor to grade an exam


The time for a professor to grade an exam is normally distributed with a mean of 12.6 minutes and a standard deviation of 2.2 minutes. The interval around the mean that contains 95% of the times needed to grade exams is

a) 7.6, 17.0
b) 7.6, 17.6
c) 8.2, 17.0
d) 8.2, 14.8

Request for Solution File

Ask an Expert for Answer!!
Basic Statistics: Time for a professor to grade an exam
Reference No:- TGS0839024

Expected delivery within 24 Hours