David rolls a number cube fifty times. The number 4 comes up twelve times. The number 3 comes up eight times. What is the experi
mental probability of rolling a 3 or 4? *
1 point
20%
30%
40%
50%
2 answers:
Answer:
40%.
Step-by-step explanation:
Prob( Rolling a 4) = 12/50
Prob( Rolling a 3) = 8/50
When the combined probabilities contain an 'OR' we Add the probability values:
Probability of a 3 or a 4
= 12/50 + 8/50
= 20/50
= 2/5
= 40%.
The correct answer is C, 40%.
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