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WGU Applied-Probability-and-Statistics Exam Syllabus Topics:

SectionObjectives
Regression and Modeling- Linear Relationships
  • 1. Simple linear regression
    • 2. Slope and intercept interpretation
      Probability Theory- Probability Distributions
      • 1. Binomial distribution basics
        • 2. Normal distribution
          - Fundamental Probability Concepts
          • 1. Basic probability rules
            • 2. Conditional probability
              • 3. Independent vs dependent events
                Statistical Inference- Hypothesis Testing (Introductory Level)
                • 1. Null vs alternative hypothesis
                  • 2. p-values interpretation
                    - Estimation and Confidence Intervals
                    • 1. Point estimates
                      • 2. Confidence interval interpretation
                        Descriptive Statistics- Single Variable Data Analysis
                        • 1. Data visualization (histograms, box plots)
                          • 2. Measures of central tendency (mean, median, mode)
                            • 3. Measures of dispersion (variance, standard deviation, range)
                              - Two Variable Data Analysis
                              • 1. Correlation
                                • 2. Scatter plots interpretation
                                  • 3. Outliers and relationships

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                                    WGU Applied Probability and Statistics (FZO1 C955) Sample Questions (Q139-Q144):

                                    NEW QUESTION # 139
                                    Probability of heads on 3 coin flips exactly twice?

                                    Answer: B

                                    Explanation:
                                    This is a binomial probability problem because there is a fixed number of independent trials, each trial has two outcomes, and the probability of success is constant. Let success be flipping heads. There are 3 coin flips, and the probability of heads on each flip is 1/2. The event "exactly two heads" can occur in three ordered ways: HHT, HTH, and THH. Each sequence has probability (1/2)(1/2)(1/2) = 1/8. Since there are three favorable sequences, the total probability is 3 × 1/8 = 3/8. Equivalently, use the binomial formula: C(3,2)(1/2)