
Concept explainers
In order to collect information for a student survey, a researcher classifies students according to eye color (blue, brown, green), gender (male, female), and class rank (freshman, sophomore). A folder for each classification is then made up (e.g., freshman/female/green eyes), hind the
(a) It includes students with blue eyes.
(b) It includes students who are female.
(c) It includes students who are male freshmen.
Try This One 2
Suppose the soda machine from Try This One 1 goes berserk and starts dispensing drinks randomly. If you want a diet cola, what is the probability that you’ll get one?
Try This One 1
A soda machine dispenses both Coke and Pepsi products, in both 12-ounce cans and 20-ounce bottles. For each brand, it has a regular cola, diet cola, and lemon-lime drink. Use a tree diagram to find the sample space for the experiment of choosing one drink at random from this machine.

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