If z is a standard normal variable, find the probability.
-$\mathrm { P } ( - 0.73

Question

If z is a standard normal variable, find the probability.
-$\mathrm { P } ( - 0.73 < \mathrm { z } < 2.27 )$

A) 0.2211
B) 0.7557
C) 1.54
D) 0.4884

Quizplus · Accepted Answer

The probability that a standard normal variable z falls between -0.73 and 2.27 can be found using the standard normal distribution table or a calculator. The cumulative probability for z = 2.27 is approximately 0.9884, and for z = -0.73 is approximately 0.2327. The probability is 0.9884 - 0.2327 = 0.7557.

If Z Is a Standard Normal Variable, Find the Probability P(−0.73<z<2.27)\mathrm { P } ( - 0.73 < \mathrm { z } < 2.27 )P(−0.73<z<2.27)

If Z Is a Standard Normal Variable, Find the Probability $\mathrm { P } ( - 0.73 < \mathrm { z } < 2.27 )$