Question

Find the probability, expressed to the nearest percent, that a variable has a z-score less than 0.42. 65% 6690 6798 689

Answer 1

Step-by-step explanation:

The probability that a variable has a z-score less than a number - let's call this number 'a'- is represented on a z-score table. Each number in the table represents the area under the curve on to the left of 'a':

In other words, the numbers in the table are the probability of the variable being less than a:

`P(Z<em></em>[tex]P(Z<0.42)=0.6628`

If we multiply by 100 we have the probability expressed as a percent: 66.28%.

Answer:

Rounded to the nearest percent, P( Z < 0.42) = 66%