The weekly wages of 1000 workers are normally distributed with mean rs. 900 and s.D. Rs 70 . Find number of workers whose weekly wages will be a) between 750 and 1250 b) more than 1122 c) less than 777
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Step-by-step explanation:
given as 5 INR so that just means that around 68.26% of workers have their wages between -5 to +5 of the mean (65-75 INR) and 95.44% between -10 to +10 of the mean (60-80 INR)
You want to know the number of workers getting more than 80 INR .
that is the region after second standard deviation (the portion that is represented from 2 in the graph above) which is 2.15% + .13% = 2.28%
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