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Monthly sales of a school’s co-op for a particular year are as follows: January February March April May June 45,300 30,300 10,500 9,500 9,000 10,400 July August September October November December 25,200 20,000 20,300 27,500 15,300 50,400 a) Calculate the mean and standard deviation of the co-op’s sales. b) Estimate confidence interval for mean of sales at 95 per cent level. Show and explain your working and interpret your answer.

Monthly sales of a school’s co-op for a particular year are as follows: January February March April May June 45,300 30,300 10,500 9,500 9,000 10,400 July August September October November December 25,200 20,000 20,300 27,500 15,300 50,400 a) Calculate the mean and standard deviation of the co-op’s sales. b) Estimate confidence interval for mean of sales at 95 per cent level. Show and explain your working and interpret your answer.

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
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Monthly sales of a school’s co-op for a particular year are as follows:

January

February

March

April

May

June

45,300

30,300

10,500

9,500

9,000

10,400

 

July

August

September

October

November

December

25,200

20,000

20,300

27,500

15,300

50,400

 

a) Calculate the mean and standard deviation of the co-op’s sales.

b) Estimate confidence interval for mean of sales at 95 per cent level. Show and explain your working and interpret your answer.                       

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