1) Thursday we talked about the probability and probability models. We also look
ID: 3430709 • Letter: 1
Question
1) Thursday we talked about the probability and probability models. We also looked at an example that described the possible outcomes of rolling two die. Write the possible outcomes. Then write a probability statement for rolling a 1 up to 12, separately. Do they form a probability model?
2) Using the data found in exercise 1, answer the following (write them as a probability statement)
a.What is the probability of rolling a 7 and one die is at least a 2?
b. What is the probability of rolling a 5 or 10?
c. What is the probability of rolling a 7 or one die is a 2?
3) The probability model below is missing a value. Fill in the missing value.
a. What is the probability X is at least a 3 (write as a probability statement)?
b. What is the probability that X is less than 3 (write as a probability statement)?
X
P(X)
0
0.012
1
0.13
2
0.24
3
0.27
4
5
0.09
6
0.07
7
0.018
4) IQ
X
P(X)
0
0.012
1
0.13
2
0.24
3
0.27
4
5
0.09
6
0.07
7
0.018
Explanation / Answer
1)
(1,1)(1,2)(1,3)(1,4)(1,5)(1,6)(2,1)(2,2)(2,3)(2,4)(2,5)(2,6)(3,1)(3,2)(3,3)(3,4)(3,5)(3,6)(4,1)(4,2)(4,3)(4,4)(4,5)(4,6)(5,1)(5,2)(5,3)(5,4)(5,5)(5,6)(6,1)(6,2)(6,3)(6,4)(6,5)(6,6)
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