Find probability that data point is greater than twenty one


A sample of 31 data points was collected from a population whose mean is 20 and standard deviation is 3. If a randomly selected data point is drawn, what is the probability that it is greater than 21?

a. 0.0314
b. 0.9589
c. 1.86
d. 0.0101
e. none of the above

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Basic Statistics: Find probability that data point is greater than twenty one
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