The data set represents the income levels of the members of a country club. Estimate the probability that a randomly selected member earns at least $82,000.
$\begin{array} { l l l r r l r r r r } 92,000 & 102,000 & 76,000 & 107,000 & 79,000 & 92,000 & 82,000 & 70,000 & 117,000 & 142,000 \ 112,000 & 79,000 & 102,000 & 97,000 & 82,000 & 122,000 & 67,000 & 97,000 & 73,000 & 87,000 \end{array}$
A) $0.8$
B) $0.4$
C) $0.7$
D) $0.6$

Question

The data set represents the income levels of the members of a country club. Estimate the probability that a randomly selected member earns at least $82,000. 
$\begin{array} { l l l r r l r r r r } 92,000 & 102,000 & 76,000 & 107,000 & 79,000 & 92,000 & 82,000 & 70,000 & 117,000 & 142,000 \ 112,000 & 79,000 & 102,000 & 97,000 & 82,000 & 122,000 & 67,000 & 97,000 & 73,000 & 87,000 \end{array}$
A) $0.8$
B) $0.4$
C) $0.7$
D) $0.6$

Quizplus · Accepted Answer

To estimate the probability that a randomly selected member earns at least $82,000, count the number of members earning $82,000 or more and divide by the total number of members. There are 14 members earning at least $82,000 out of 20 members, so the probability is $14/20 = 0.7$.

The Data Set Represents the Income Levels of the Members