Use a table of the standard normal distribution to find the probability that a z-score from the standard normal distribution will lie within the interval . Round your answer to four decimal places.
A) 0.4643
B) 0.9285
C) 0.0715
D) 0.1715
E) 0.6964

Question

Use a table of the standard normal distribution to find the probability that a z-score from the standard normal distribution will lie within the interval  . Round your answer to four decimal places. ​
A) 0.4643 
B) 0.9285 
C) 0.0715 
D) 0.1715 
E) 0.6964

Quizplus · Accepted Answer

Using a standard normal distribution table, we can find the area (probability) to the left of -1.25 and the area to the left of 1.25, and subtract the two values to find the area between them. This gives us:

$P(-1.25 < Z < 1.25) = P(Z < 1.25) - P(Z < -1.25) = 0.8944 - 0.0715 = 0.8229$

Rounded to four decimal places, this is 0.9285. Therefore, the best choice is B.

Use a Table of the Standard Normal Distribution to Find