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WGU Applied-Probability-and-Statistics Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Regression and Modeling | - Linear Relationships
|
| Statistical Inference | - Estimation and Confidence Intervals
|
| Probability Theory | - Fundamental Probability Concepts
|
| Descriptive Statistics | - Single Variable Data Analysis
|
WGU Applied Probability and Statistics (FZO1 C955) Sample Questions:
Expected value of X = 1×0.2 + 2×0.5 + 3×0.3 = ?
- A. 2.1
- B. 1.5
- C. 2.0
- D. 3.0
Correct Answer: A 🗳️
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Best chart for categorical data?
- A. Boxplot
- B. Scatterplot
- C. Bar chart
- D. Histogram
Correct Answer: C 🗳️
Explanation: Only visible for TestPassKing members. You can sign-up / login (it's free).
Standard deviation increases #
- A. Variance decreases
- B. Data more spread out
- C. Data closer
- D. Mean increases
Correct Answer: B 🗳️
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A person has a .5 probability of taking a train to work, a .3 probability of carpooling, and a .2 probability of walking. The probability of being late is .2 when taking the train, .1 when carpooling, and .05 when walking.
What is the probability of taking the train and being on time, or walking and being on time?
- A. .4
- B. .3
- C. .59
- D. .45
Correct Answer: C 🗳️
Explanation: Only visible for TestPassKing members. You can sign-up / login (it's free).
Type II error occurs when:
- A. Null accepted when false
- B. Correct decision
- C. Data error
- D. Null rejected when true
Correct Answer: A 🗳️
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