Question

question 17 (5 points)
the table lists the drinking habits of a group of college students. if a student is chosen at random, find the probability of getting someone who is a regular or heavy drinker. round your answer to three decimal places.

0.155
0.259
0.711
0.218

Explanation:

Step1: Calculate the number of regular or heavy drinkers

The number of regular drinkers is \(80\) and the number of heavy drinkers is \(10\). So the number of regular or heavy drinkers is \(80 + 10=90\)

Step2: Calculate the probability

The total number of students is \(n = 412\). The probability \(P\) of getting someone who is a regular or heavy drinker is given by the formula \(P=\frac{\text{Number of favorable outcomes}}{\text{Total number of outcomes}}\). So \(P=\frac{90}{412}\)

$$P=\frac{90}{412}\approx0.218$$

Answer:

\(0.218\)