Practice - Proportion Tests
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Practice Questions
Test your understanding with targeted questions
What is the formula for the single proportion test?
💡 Hint: Remember p is the sample proportion, and P is the population proportion.
How do you calculate the pooled proportion?
💡 Hint: Combine the strengths of both samples!
4 more questions available
Interactive Quizzes
Quick quizzes to reinforce your learning
What is the primary purpose of a single proportion test?
💡 Hint: Think about how this test relates to claims made about a population.
True or False: A higher Z value always means that the result is significant.
💡 Hint: Consider the context of significance testing!
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Challenge Problems
Push your limits with advanced challenges
A medical trial reported a success proportion of 0.85 in a new treatment compared to a known treatment proportion of 0.70. If 120 participants in the trial were successful, test if the new treatment is significantly better.
💡 Hint: Ensure to check the assumptions of the test before grabbing your calculator.
Two brands of light bulbs were tested to see which has a longer lifespan. Sample A reports 15 failures out of 100 bulbs while Sample B reports 5 failures out of 80. Can you determine if there's a significant difference in proportions of failures?
💡 Hint: Be sure to clearly lay out the calculations step-by-step!
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Reference links
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