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4 cards from this section. Quick, good the night before a test.
Define Normal Distribution in your own words.
Think about its shape and what the peak represents.
What is the Empirical Rule?
Consider the percentages and how they relate to standard deviations.
What is the shape of the Normal Distribution?
Think about how its graph looks.
True or False: In a Normal Distribution, the mean, median, and mode are all different.
Think about what defining characteristics it has.
A manufacturing plant produces light bulbs with a mean lifespan of 800 hours and a standard deviation of 50 hours. Calculate the probability that a light bulb lasts more than 850 hours.
Consider using the Z-table to find areas and make your probability calculation.
In a study, the test scores of students follow a Normal Distribution with a mean of 75 and a standard deviation of 10. What is the probability that a student scores between 70 and 80?
Use the Empirical Rule or Z-table for required probabilities.
7 more questions in this section. Enroll free to practise them all.
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