For some positive value of x, the probability that a standard normal variable is between 0 and + 1.5x is 0.4332. The value of x is:
A) 0.10
B) 0.50
C) 1.00
D) 1.50
E) 2.00

Question

Quizplus · Accepted Answer

The probability of a standard normal variable being between 0 and +1.5x is given as 0.4332. In a standard normal distribution, the probability of being between 0 and +1 is approximately 0.3413. Given that 1.5x results in a probability of 0.4332, it suggests that x must be 1.00 to align with the standard normal distribution properties, where an increase in the standard deviation (x in this case) directly affects the probability range.

For Some Positive Value of X, the Probability That a Standard