Multiple Choice
Three defective electric toothbrushes were accidentally shipped to a drugstore by the manufacturer along with 17 non-defective ones. What is the probability that the first two electric toothbrushes sold will be returned to the drugstore because they are defective?
A) 3/20 or 0.15
B) 3/17 or 0.176
C) ¼ or 0.25
D) 3/190 or 0.01579
Correct Answer:

Verified
Correct Answer:
Verified
Q21: An individual can assign a subjective probability
Q30: A study of interior designers' opinions with
Q31: Airlines monitor the causes of flights arriving
Q32: In a probability problem with joint probabilities,
Q33: To apply the special rule of addition,
Q36: Dice are used in a variety of
Q39: What is a collection of one or
Q51: A combination of a set of objects
Q69: A tire manufacturer advertises, "the median life
Q76: An illustration of an experiment is turning