A consumer affairs agency wants to check the average weight of a new product on themarket. A random sample of 25 items of the product was taken and the weights (in grams) ofthese items were classified as follows:class boundariesfrequency74- 77377- 80680- 83983-86386- 894 (a) Find the third quartile of the weights (b) What percentage of the items had a weight less than 83 grams? (c) Calculate the mean and standard deviation of the weights.

Given data: class boundaries frequency 74- 77 3 77- 80 6 80- 83 9 83-86 3 86- 89 4

Answered: A consumer affairs agency wants to…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Question

A consumer affairs agency wants to check the average weight of a new product on the
market. A random sample of 25 items of the product was taken and the weights (in grams) of
these items were classified as follows:

class boundaries	frequency
74- 77	3
77- 80	6
80- 83	9
83-86	3
86- 89	4

(a) Find the third quartile of the weights
(b) What percentage of the items had a weight less than 83 grams?
(c) Calculate the mean and standard deviation of the weights.

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