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WGU Applied-Probability-and-Statistics Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Descriptive Statistics | - Data visualization
|
| Topic 2: Statistical Inference | - Hypothesis testing
|
| Topic 3: Regression and Correlation | - Relationship analysis
|
| Topic 4: Probability | - Probability rules
|
| Topic 5: Probability Distributions | - Discrete distributions
|
WGU Applied Probability and Statistics (FZO1 C955) Sample Questions:
1. The average commute time for workers in a city in 2021 was 35 minutes, with a standard deviation of 5 minutes.
Assuming a normal distribution, which two values encompass 95% of the data?
A) 20 minutes and 50 minutes
B) 35 minutes and 40 minutes
C) 25 minutes and 45 minutes
D) 30 minutes and 40 minutes
2. Type II error occurs when:
A) Data error
B) Null accepted when false
C) Null rejected when true
D) Correct decision
3. Random variable X = number of heads in 4 coin flips #
A) Continuous
B) Neither discrete nor continuous
C) Discrete
D) Both discrete and continuous
4. In a city's public transportation system, the distribution of commuters by mode of transport is as follows: 40% use buses, 25% use trains, 20% use bicycles, 10% walk, and 5% use other means of transportation.
What is the probability that a randomly selected commuter uses either a bus or a train?
A) 30%
B) 65%
C) 50%
D) 45%
5. A city council surveys residents and business owners about a proposed new public transportation system. The results of the survey are shown in the following 2 × 2 contingency table.
Which statement is true?
A) A resident is much more likely than a business owner to favor the new transportation system.
B) A resident is slightly more likely than a business owner to favor the new transportation system.
C) A resident is much less likely than a business owner to favor the new transportation system.
D) A resident is slightly less likely than a business owner to favor the new transportation system.
Solutions:
| Question # 1 Answer: C | Question # 2 Answer: B | Question # 3 Answer: C | Question # 4 Answer: B | Question # 5 Answer: A |
