During an experiment, Juan rolled a six-sided number cube 18 times. The number two occurred four times. Juan claimed the experimental probability of rolling a two was approximately 1 ninth Which of the following is true about Juan’s claim?
Answer
A
Juan's claim is incorrect. The correct experimental probablilty is 2 ninths .
B
Juan’s claim is correct.
C
Juan's claim is incorrect. The correct experimental probablilty is 4 ninths .
D
Juan's claim is incorrect. The correct experimental probablilty is 1 third .
Explanation
Experimental probability is the number of times the event occurred divided by the total number of trials. Juan rolled a two 4 times in 18 rolls, so the probability is 4/18 = 2/9. His claim of approximately 1/9 is incorrect; choice A gives the correct probability.
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