OpenStax, Statistics §4.4 Geometric Distribution (Optional) · Try It 2 · Probability · Discrete distributions
Geometric Distribution (Optional) · Try It 2
An instructor feels that 15 percent of students get below a C on their final exam. She decides to look at final exams (selected randomly and replaced in the pile after reading) until she finds one that shows a grade below a C. We want to know the probability that the instructor will have to examine at least 10 exams until she finds one with a grade below a C. What is the probability question stated mathematically?
OpenStax, Statistics · §4.4 Geometric Distribution (Optional) · Try It 2
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