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Fofino [41]
4 years ago
15

Consider a normal distribution with mean 30 and standard deviation 2. What is the probability that a value selected at random fr

om this distribution is greater than 30
Mathematics
1 answer:
blagie [28]4 years ago
4 0
The probability that the value selected at random is greater than 30 will be found as follows:
z-score is given by:
z=(x-mu)/sig
z=(30-30)/2=0
thus
P(x>30)=1-P(X<30)=1-P(z<0)=1-0.5=0.5
Answer P(x>30)=0.5
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