How do you use the z-score to determine P(0<z<0.94)?

2 Answers
sjc
Feb 10, 2018

P(0 < Z< 0.94)=0.3264

Explanation:

P(0 < Z< 0.94)=P(Z < 0.94)-P(Z<0)

from tables we have

P(0 < Z< 0.94)=0.8264-0.5

P(0 < Z< 0.94)=0.3264

Fleur
Feb 10, 2018

Here's another way to do it.

Explanation:

Use the normal cumulative distribution function on your graphing calculator.

You're trying to find the probability of getting a value in between 0 and 0.94, and for a z-score distribution, the mean is 0 and the standard deviation is 1. Enter these numbers into your calculator:

"normalcdf" (0, 0.94, 0, 1) ~~ 0.3264

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