Find the area under the normal distribution curve between z = -1.10 and z = 2.25.
A)0.852
B)0.124
C)0.364
D)0.488

Question

Quizplus · Accepted Answer

The area under the normal distribution curve between two z-scores is found by looking up the cumulative area from the left for each z-score in a standard normal distribution table and subtracting the smaller area from the larger area. For z = -1.10, the cumulative area to the left is approximately 0.1359. For z = 2.25, the cumulative area to the left is approximately 0.9878. Subtracting the smaller area from the larger gives 0.9878 - 0.1359 = 0.8519, which rounds to 0.852, indicating the proportion of the data between these two z-scores.

Find the Area Under the Normal Distribution Curve Between Z