Answer
a) 4.8%
b) 49.7%
c) there are about 50% of each sex in each age group, but its ranges 49% of female in the youngest group to 54.5% in the second oldest age group. As the age increases, there is generally a slight increase in the percentage of female drivers, though this is not statistically significant.
d) There is a slight association, as stated in part c, but there is not enough of one to conclude that the association is statistically significant.
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.
