Assuming a normal distribution of 1000 cases,how many cases will be farther away from the mean than +3 standard deviations?
A)at least 500
B)about 3
C)327
D)It's impossible to estimate.

Question

Quizplus · Accepted Answer

In a normal distribution, approximately 99.7% of the data falls within three standard deviations from the mean. Therefore, about 0.3% of the data is farther away than +3 or -3 standard deviations. For 1000 cases, this is about 3 cases.

Assuming a Normal Distribution of 1000 Cases,how Many Cases Will