nathaniel12
09.06.2021 •
Mathematics
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Ответ:
Step-by-step explanation:
hope it helps
Ответ:
P(-3.0 < z < 3.0) = 0.9974
Step-by-step explanation:
Mean = 5
Standard Deviation = 0.25
We need to find P(4.25 <x<5.75)
z = x - mean/standard deviation
z = 4.25 - 5/0.25
z = -3.0
z = x - mean/standard deviation
z = 5.75 - 5/0.25
z = 3.0
So, P(4.25 <x<5.75) P(-3.0 < z < 3.0)
Finding values from the z-score table
P(z<-3.0) = 0.0013
P(z<3.0) = 0.9987
P(-3.0 < z < 3.0)=P(z<3.0) - P(z<-3.0)
P(-3.0 < z < 3.0) = 0.9987 - 0.0013
P(-3.0 < z < 3.0) = 0.9974