Question

1. A coin is flipped 20 times. Which experimental probability is most consistent with the theoretical probability?
2. Mr. and Mrs. Waldorf are expecting triplets. Suppose the chance of each child being a boy is 50%
and of being a girl is 50%. In the space below, use a tree diagram to show the sample space. Then find
the probability of each event.
a. P(all three children will be boys) _____ b. P(at least one boy and one girl) _____
c. P(two boys and one girl) _____ d. P(at least two girls) _____
3. Suppose there are two spinners labeled 1-9, and you spin each spinner once. What is the probability of the spinner landing on 4 the first spin and 6 or 9 on the second one?
4.What is the theoretical probability that someone will roll a die and land or 4 or below twice in a
row?
5.If you toss a number cube 300 times, about how many times do you expect to get a 5?
6.Ekin has nine cards numbered 1 – 9. What is the probability of Ekin pulling a 7 or 9, not replacing the first card and then pulling a number 2 card?

Answer 1

Answer:

2 a

3 c

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