Choose the right sample space for probability: retrieval

Choose the right sample space for probability: retrieval: a separate sample with explanations after your response.

Paper packet. Every task here also exists on screen, where it is checked automatically; answers written on paper are not assessed by Nydus. When you are back at a device, enter your answers there.

1. What you will learn

Choose the right sample space for probability: retrieval: attempt the probability sample without worked examples. Use the target of each question to decide which information matters, and record your initial response before reading its explanation.

2. Practice

A fair six-sided die is rolled. What is the probability of a result greater than 4? Enter a fraction.

1/3
2/3
1/6
4/3
-2/3

3. Practice

A box contains 5 red and 3 blue balls. Two are drawn without replacement. What is the probability both are blue? Enter a fraction.

3/28
3/14
3/56
31/28
-25/28

4. Practice

Independent events A and B have probabilities .4 and .3. What is the probability that at least one occurs?

29/50
29/25
29/100
79/50
-21/50

5. Practice

Of 80 people, 45 speak language A, 30 speak B and 12 speak both. How many speak neither?

17
34
17/2
18
16

6. What you can do now

Review the probability decisions in this quantitative modeling sample. Identify the particular restriction or evidence that changed your answer, and return to the corresponding worked lesson before trying a new case.