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:
[tex]P(Z
[tex]P(Z<0.42)=0.6628[/tex]
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%
