Question 9 • Probability and Statistics with Applications Honors Sem-2-FL-1210300 (2024-2025)
A group of dental researchers are testing the effects of acidic drinks on dental crowns. They have five containers of crowns labeled V, W, X, Y, and Z. They will randomly select one of the containers to be the control for the experiment by drawing one of five well-mixed slips of paper with the same labels from a hat. Which of the following is the probability model for the control container?
Answer
A
V W X Y Z 0.20 0.20 0.20 0.20 0.20
B
V W X Y Z 0.20 0.10 0.30 0.20 0.20
C
V W X Y Z 5 5 5 5 5
D
W X Y Z 0.25 0.25 0.25 0.25
Explanation
There are five slips, one for each container, and each is equally likely to be drawn. Thus each container has probability 1/5 = 0.20 of being selected as the control. Choice A lists all five containers with probability 0.20 each.
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