Vincent flipped three coins during a probability experiment. The outcomes of the first 40 trials are shown in the table.
Based on the information in the table, in how many of the next 120 trials will the outcome be exactly two of the coins showing heads?
Answer
F
60
G
87
H
39
J
48
Answers
Given : Vincent flipped three coins during a probability experiment. The outcomes of the first 40 trials are given in table:
To Find : how many of the next 120 trials will the outcome be exactly two of the coins showing heads
60
87
39
48
Solution:
3 Tails 4
1 Head 2 Tails 13
2 Heads 1 Tail 16
3 Heads 7
Total 40
Probability of exactly 2 head = 16/40 = 4/10 0.4
exactly two of the coins showing heads in next 120 trials
= 0.4 x 120
= 48
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