WGU Applied-Probability-and-Statistics Actual Free Exam Questions & Community Discussion
A commuter has a .4 probability of taking the bus to work, a .4 probability of driving a car, and a .2 probability of cycling. The probability of being late is .15 when taking the bus, .05 when driving a car, and .1 when cycling.
What is the probability of taking the bus and being on time, or driving a car and being on time?
What is the probability of taking the bus and being on time, or driving a car and being on time?
Correct Answer: A
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Probability of rolling sum = 12 = ?
Correct Answer: D
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The dot plot illustrates the frequency of outdoor games played by students per week.
Which statement is true?
Which statement is true?
Correct Answer: B
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A teacher plots the test scores of a class using the box plot.
What is the interquartile range?
What is the interquartile range?
Correct Answer: C
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Independent events: P(A|B) = ?
Correct Answer: B
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A spinner is divided into four equal sections labeled A, B, C, and D.
What is the sample space for this experiment?
What is the sample space for this experiment?
Correct Answer: B
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Confidence interval = sample mean ± ?
Correct Answer: B
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Expected value = ?
Correct Answer: A
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Review the following inequality:
y # #4x + 1
Which shaded region is described by this inequality?
y # #4x + 1
Which shaded region is described by this inequality?
Correct Answer: D
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Poisson mean = 4. Probability of exactly 2 events?
Correct Answer: B
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Regression intercept represents:
Correct Answer: D
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Correlation coefficient r = #0.9 indicates:
Correct Answer: B
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Conditional probability P(A|B) = P(A and B)/P(B) #
Correct Answer: C
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