Answer
a) 9.3%
b) 24.7%
c) 80.8%
d) No, there appears to be no association between weather and ability to forecast weather. On days it rained, his forecast was correct 79.4% of the time. When there was no rain, his forecast was correct 81.0% of the time.
Work Step by Step
In order to calculate a percentage, first divide the number in the given category by the total number. Then, express this fraction in decimal form. Finally, multiply by 100% to express this number as a percentage.
