SOLUTION: The sum of the probabilities of complementary events is equal to 1.
Choose one answer.
a. True
b. False
Question 3
Marks: 3
Thirty people were asked about their
Algebra.Com
Question 694295: The sum of the probabilities of complementary events is equal to 1.
Choose one answer.
a. True
b. False
Question 3
Marks: 3
Thirty people were asked about their favorite color, 10 said red, 15 said green, and 5 said blue. What is the probability that a person chosen has a favorite color of red or blue?
Choose one answer.
a. 50%
b. 83%
c. 33%
d. 67%
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!
1.
answer:
a.
The sum of the probabilities of complementary events is .
P(A) + P(A') =
2.
answer is: a. %
if red,the probability a person chosen has a favorite color of red is
and if blue, the probability a person chosen has a favorite color of blue is
so, the probability a person chosen has a favorite color of red and blue is ≈ or %
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