SOLUTION: Hello, This is under Statistics and Probability 1. How many ways can Gary, Rusty and Jessica be arranged into a group of 3 if order does not matter? 2. A test has five tr

Question 879706: Hello,
This is under Statistics and Probability

1. How many ways can Gary, Rusty and Jessica be arranged into a group
of 3 if order does not matter?
2. A test has five true-false questions that a student does not know
how to answer. What is the probability that student will get all five
questions correct?
3. A combination lock has the numbers 1 to 40 on each of three
consecutive tumblers. What is the probability of opening the lock in
ten tries?
4. What is the probability of rolling a 3 or higher on a die?
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!
1. one way 3C3
2. p(correct) = .5, n = 5, P(x=5) = (.5)^5
3. p(correct choice) = = 1/64,000, n = 10
P(x=10) = (1/64000)^10
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