Question

68 The daily sales of a certain machine are
normally distaibuted with mean RS-8000 and
Variance RS. 10,000
is What is the probability that an a certain
day the sales will be less than Rs. 8210
2) what percentage of the days will the sales
be between RS
and Rs. 82108
Criven: Area fon SNV. Z from Z=0 to Z=2.1
is 0.4821
that between
Z=0
0 3413 )
​

Answer 1

55% is the appropriate answer......

As due to cos and sin value that is 5% and variance is 10

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