Practice - Two-sided probability
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Practice Questions
Test your understanding with targeted questions
What is two-sided probability?
💡 Hint: Think about both sides of the mean.
How do you calculate Z-score?
💡 Hint: Z-score tells you how far and in what direction a point is from the mean.
4 more questions available
Interactive Quizzes
Quick quizzes to reinforce your learning
What does two-sided probability measure?
💡 Hint: Focus on the range aspect.
True or False: The empirical rule states that 95% of values lie within two standard deviations of the mean.
💡 Hint: Recall the empirical rule percentages.
1 more question available
Challenge Problems
Push your limits with advanced challenges
You are testing a new teaching method, and the test scores are normally distributed with μ = 75 and σ = 10. Calculate the two-sided probability for scores between 70 and 80.
💡 Hint: Don't forget to reference the Z-table for probabilities.
An IQ test is normally distributed with μ = 100 and σ = 15. Find the probability of scoring between 85 and 115.
💡 Hint: Refer to the empirical rule to check your work.
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Reference links
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