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?
A. 0.9488
B. 0.9821
C. 0.9976
D. 0.9712
Answer:B
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?
A. 0.9488 B. 0.9821 C. 0.9976 D. 0.9712