Two students, Jen and John, are registered for the same class and attend independently to each other, Jen 82.5% of the time and John 95% of the time. What is the probability that on any given day
a) Both will be in class?
b) At least one of them will not be in class?
In a study to determine frequency and dependency of color-blindness relative to females and males, people were chosen at random and the following results were recorded: Female Male
Color-Blind 7 44
Not Color-Blind 619 583