Practice - Finding Probabilities
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Practice Questions
Test your understanding with targeted questions
What is the formula for calculating tail probability?
💡 Hint: Think about the complement of the probability.
Define what a Z-score is.
💡 Hint: Consider how standard deviations relate to the average.
4 more questions available
Interactive Quizzes
Quick quizzes to reinforce your learning
What is the formula to calculate the tail probability?
💡 Hint: Consider the definition of tail probabilities.
True or False: The Z-score for a data point that is exactly at the mean is 0.
💡 Hint: Think about how the Z-score is calculated.
2 more questions available
Challenge Problems
Push your limits with advanced challenges
Given a dataset with \( mean = 200 \) and \( sd = 25 \), calculate \( P(250 < X < 300) \) and interpret your results.
💡 Hint: Remember to use the standardization formula for both bounds.
If the 95th percentile of a distribution is 130 with mean 100, what is the new mean if the distribution shifts right by 40?
💡 Hint: Consider how shifts affect entire distributions, not just individual percentiles.
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Reference links
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