Find the indicated probability. Express answers as decimals.
-A telephone pollster has the names and telephone numbers of 50 voters, 20 of whom are registered Democrats and 30 of whom are registered Republicans. After each call, she removes that person's name from her list. What
Is the probability that the first two calls are to Democrats?
A)0.155
B)0.9
C)0.845
D)0.25

Question

Quizplus · Accepted Answer

The probability of the first call being to a Democrat is 20/50 or 0.4. After removing one Democrat from the list, the probability of the second call being to a Democrat is 19/49. Multiplying these probabilities gives 0.4 * (19/49) = 0.155.

Find the Indicated Probability. Express Answers as Decimals