If x is a normal random variable with mean of 1228 and a standard deviation of 120, the number of standard deviations from 1228 to 1380 is:
A) 10.233
B) 3.1989
C) 11.50
D) 1.267
E) 2.435

Name: If x is a normal random variable with mean of 1228 and a standard deviation of 120, the number of standard deviations from 1228 to 1380 is: A) 10.233 B) 3.1989 C) 11.50 D) 1.267 E) 2.435
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Question

Quizplus · Accepted Answer

The number of standard deviations is calculated by the formula: (1380 - 1228) / 120 = 1.267.

If X Is a Normal Random Variable with Mean of 1228