A major credit card company has determined that the amount its customers charge on their accounts is normally distributed with an average of R2800 per month and a standard deviation of R200. Question 15 What proportion of customers charge more than R2750 per month on their account (rounded off to three decimals)? Question 16 What percentage of customers charge between R2410 and R3016 per month (rounded off to two decimals)?

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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A major credit card company has determined that the amount its customers charge on their accounts is normally distributed with an average of R2800 per month and a standard deviation of R200.


Question 15
What proportion of customers charge more than R2750 per month on their account (rounded off to three decimals)?

Question 16

What percentage of customers charge between R2410 and R3016 per month (rounded off to two decimals)?

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