Updated: Aug 12, 2026
No. of Questions: 158 Questions & Answers with Testing Engine
Download Limit: Unlimited
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| Certification Vendor: | Western Governors University (WGU) |
| Exam Name: | Applied Probability and Statistics Objective Assessment |
| Exam Number: | C955 / FZO1 |
| Exam Format: | Multiple Choice, Single Answer, Scenario-Based |
| Available Languages: | English |
| Exam Duration: | 90 minutes |
| Passing Score: | Competency-based (approx. 65-70% cut score) |
| Certificate Validity Period: | Valid while enrolled; competency does not expire |
| Real Exam Qty: | 40 |
| Exam Price: | Included in WGU tuition ($3,800-$4,500 per 6-month term) |
| Recommended Training: | C955 Official Course Materials MindEdge Learning Platform |
| Exam Registration: | WGU Student Portal |
| Sample Questions: | WGU Applied-Probability-and-Statistics Sample Questions |
| Exam Way: | Online proctored via Proctorio (webcam, screen monitoring, lockdown browser) |
| Pre Condition: | No formal prerequisites; basic algebra recommended |
| Official Syllabus URL: | https://www.wgu.edu/online-courses/math/c955-applied-probability-statistics.html |
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Probability Concepts | 20% | - Discrete and continuous probability distributions - Normal distribution and empirical rule - Conditional probability and Venn diagrams - Probability rules, independent and dependent events |
| Topic 2: Correlation & Regression | 20% | - Simple linear regression models - Predictions and limitations of regression - Interpreting slope, intercept, and R-squared - Correlation coefficient and interpretation |
| Topic 3: Descriptive Statistics | 25% | - Types of data: categorical, discrete, continuous - Measures of center: mean, median, mode - Measures of spread: range, IQR, variance, standard deviation - Graphical displays: histograms, boxplots, scatterplots |
| Topic 4: Inferential Statistics & Study Design | 20% | - Sampling methods and bias - Hypothesis testing framework and interpretation - Confidence intervals for means/proportions - Observational studies vs experiments |
| Topic 5: Basic Numeracy & Algebra | 15% | - Arithmetic operations, fractions, decimals, percentages - Linear equations, inequalities, graphing functions - Exponents, roots, and basic formulas |
1. A teacher plots the test scores of a class using the box plot.
What is true about the test scores?
A) The median score for Class A is 80 points.
B) The median score for Class A is 70 points.
C) The median score for Class A is 75 points.
D) The median score for Class A is 88 points.
2. 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) .3
B) .4
C) .45
D) .59
3. A hospital analyzes the recovery rates of patients undergoing two different treatments for a specific condition.
Treatment X has an overall recovery rate of 80%, while Treatment Y has a recovery rate of 90%. However, when the data is divided by age groups, Treatment X has a higher recovery rate in each age group compared to Treatment Y.
Is Simpson's paradox present in this study?
A) No, because the study does not involve a confounding variable that affects recovery rates.
B) No, because the overall recovery rate is higher for Treatment Y.
C) Yes, because the recovery rates differ between the two treatments.
D) Yes, because the overall recovery rates are inconsistent with the age group-specific rates.
4. Probability of rolling 1, 2, or 3 on die = ?
A) 1/6
B) 2/3
C) 1/2
D) 1/3
5. Z-score negative #
A) Equal to mean
B) Unknown
C) Value above mean
D) Value below mean
Solutions:
| Question # 1 Answer: A | Question # 2 Answer: D | Question # 3 Answer: D | Question # 4 Answer: C | Question # 5 Answer: D |
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