Consider a random variable, z, that has a standardized normal distribution. Determine P(z -1).
A) 0.8413
B) 0.1251
C) 0.1512
D) 0.2124

Question

Consider a random variable, z, that has a standardized normal distribution. Determine P(z > -1).
A) 0.8413
B) 0.1251
C) 0.1512
D) 0.2124

Quizplus · Accepted Answer

The probability P(z > -1) for a standardized normal distribution (mean = 0, standard deviation = 1) can be found using standard normal distribution tables or a calculator. For z > -1, it corresponds to the area to the right of z = -1, which is 0.8413. This is because the total area under the curve is 1, and the area to the left of z = -1 is 0.1587 (the complement of 0.8413).

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