Consider a random variable, z, that has a standardized normal distribution. Determine (-2 ≤ z ≤ 3).
A) 0.12414
B) 0.97587
C) 0.47722
D) 0.49865

Question

Quizplus · Accepted Answer

The standardized normal distribution has a mean of 0 and a standard deviation of 1. The probability of z being between -2 and 3 encompasses the majority of the distribution's area under the curve. Using standard normal distribution tables or a calculator, the cumulative probability from -2 to 3 is approximately 0.97587, which represents the area under the curve between these two z-scores.

Consider a Random Variable, Z, That Has a Standardized Normal