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A randomly selected value from a normal distribution is found to be 2.1 standard deviations above...

A randomly selected value from a normal distribution is found to be 2.1 standard deviations above its mean. What is the probability that a randomly selected value from the distribution will be less than 2.1 standard deviations from the mean?

0.9976
0.9821
0.9712
0.9488
0 0
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Answer #1

solution:- option B. 0.9821

the probability that a randomly selected value from the distribution will be less than 2.1 standard deviations from the mean 0.9821

P(Z<2.1) = 0.9821

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