Given a random variable X follows a Normal distribution with mean 10 and standard deviation 5, what is the probability that X li es within one standard deviation of the mean?
1 answer:
Answer:
c) 0.6827
Step-by-step explanation:
We have to find P(-1<Z<1) by using z-table
P(-1<Z<1) = P(Z<1) – P(Z<-1)
P(-1<Z<1) = 0.841345 - 0.158655
P(-1<Z<1) = 0.682689
P(-1<Z<1) = 0.6827
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