SOLUTION: HI, Can you please help me solve this question: What is the probability that an observation is at least one standard deviation above and below the mean?

SOLUTION: HI, Can you please help me solve this question: What is the probability that an observation is at least one standard deviation above and below the mean?

Algebra.Com

Question 324796: HI, Can you please help me solve this question: What is the probability that an observation is at least one standard deviation above and below the mean?
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Find the z score for each.
.
.
.
Below

.
.
.
Above

.
.
.
They are the same since the normal distribution function is symmetric about the mean, .
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