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

2 Answers
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#

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#