Test Bank – Statistics: Unlocking the Power of Data, 4th Edition by Robin H. Lock

TEST BANK




** All Chapters included
** Multiple Choice
** Multiple Choice
** Conceptual Questions

,Table of Contents are given below




Chapter 1. Collecting Data
Chapter 2. Describing Data
Chapter 3. Confidence Intervals
Chapter 4. Hypothesis Tests
Chapter 5. Approximating with a Distribution
Chapter 6. Inference for Means and Proportions
Chapter 7. Chi-Square Tests for Categorical Variables
Chapter 8. ANOVA to Compare Means
Chapter 9. Inference for Regression
Chapter 10. Multiple Regression
Chapter 11. Probability Basics

,The test bank is organized in reverse order, with the last chapter displayed first, to ensure that all
chapters are included in this document. (Complete Chapters included Ch11-1)

Statistics - Unlocking the Power of Data, 4e (Lock)
Chapter 11 Probability Basics

11.1 Probability Rules

Use the following information about events A and B to answer the questions below.

1) P(A) = 0.42, P(B) = 0.26, and

Find P(not A). Use two decimal places.
Answer: 0.58
Diff: 1 Type: SA Var: 1
L.O.: 11.1.3

2) P(A) = 0.41, P(B) = 0.35, and

Find P(not B). Use two decimal places.
Answer: 0.65
Diff: 1 Type: SA Var: 1
L.O.: 11.1.3

3) P(A) = 0.49, P(B) = 0.34, and

Find P(A or B). Use two decimal places.
Answer: 0.66
Diff: 2 Type: SA Var: 1
L.O.: 11.1.3

4) P(A) = 0.45, P(B) = 0.35, and

Find P(A if B). Use three decimal places.
Answer: 0.343
Diff: 2 Type: SA Var: 1
L.O.: 11.1.3

5) P(A) = 0.47, P(B) = 0.26, and

Find P(B if A). Use three decimal places.
Answer: 0.383
Diff: 2 Type: SA Var: 1
L.O.: 11.1.3




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, 6) P(A) = 0.39, P(B) = 0.35, and

Are events A and B disjoint? Explain briefly.
Answer: No, because P(A and B) ≠ 0.
Diff: 2 Type: ES Var: 1
L.O.: 11.1.4

Use the following to answer the questions below:

Let A and B be two events such that P(A) = 0.35, P(B) = 0.45, and Use
two decimal places in your answer unless otherwise specified.

7) Find P(not A).
Answer: 0.65
Diff: 2 Type: SA Var: 1
L.O.: 11.1.3

8) Find P(not B).
Answer: 0.55
Diff: 2 Type: SA Var: 1
L.O.: 11.1.3

9) Find P(A or B). Use four decimal places.
Answer: 0.6425
Diff: 2 Type: SA Var: 1
L.O.: 11.1.3

10) Find P(A if B).
Answer: 0.35
Diff: 2 Type: SA Var: 1
L.O.: 11.1.3

11) Find P(B if A).
Answer: 0.45
Diff: 2 Type: SA Var: 1
L.O.: 11.1.3

12) Are events A and B disjoint?
A) Yes
B) No
Answer: B
Explanation: No, because P(A and B) ≠ 0.
Diff: 2 Type: MC Var: 1
L.O.: 11.1.4




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