For a standardized normal distribution, calculate P(1.78

Question

For a standardized normal distribution, calculate P(1.78 < z < 2.34).
A) 0.0124
B) 0.0341
C) 0.0412
D) 0.0279

Quizplus · Accepted Answer

To find P(1.78 < z < 2.34), we look up the z-scores in the standard normal distribution table or use a calculator. The area to the left of z = 1.78 is approximately 0.9625 and the area to the left of z = 2.34 is approximately 0.9904. Subtracting these gives 0.9904 - 0.9625 = 0.0279, which is the probability of z being between 1.78 and 2.34.

For a Standardized Normal Distribution, Calculate P(1