9
QuizMultiple Choice
Experimental Probability
Question 9 • *CR Expository Reading and Writing S1 [E4250OX]
During an experiment, a spinner landed on green 9 times, which resulted in an experimental probability of . Mary said that there must have been 45 trials in the experiment. Why is Mary incorrect?
Answer
A
If there were 9 occurrences and 45 trials, the simplified experimental probability would be , not .
B
Mary multiplied the 9 occurrences by 6 instead of 5.C
Mary mistakenly thought that was the simplest form of .
D
If there were 9 occurrences, the simplified experimental probability would be , not .