- +1-530-264-8006
- info@tutorsglobe.com

Confidence interval for the average length of a box

A previous analysis of paper boxes showed that the the standard deviation of their lengths is 13 millimeters. A packer wishes to find the 95% confidence interval for the average length of a box. How many boxes does he need to measure to be accurate within 4 millimeters?

A. 11

B. 58

C. 41

D. 29

18,76,764

Questions

Asked

21,311

Experts

9,67,568

Questions

Answered

Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!

Submit Assignment2015 © Tutors Globe. All rights reserved.

## Q : Scores of adults are normally distributed with a mean

IQ scores of adults are normally distributed with a mean of 100 and a standard deviation of 15. If one adult is randomly selected, find the probability that their IQ is between 100 and 105?