Practice Normal Distribution (2.3) - Statistics - Mathematics III (PDE, Probability & Statistics)

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9 questions

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2 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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Quiz
3 questions · about 2 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What shape does a normal distribution curve have?
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Think about how it looks visually.
Question 2.
What are the two main parameters of the normal distribution?
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These parameters define the center and spread.
3Question 3.
What is the formula for normal distribution?
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Recall the shape and variables involved.
4Question 4.
True or False: The mean, median, and mode of a normal distribution are all equal.
- True
- False
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Think about the properties of the distribution.
Question 5.
A dataset with a mean of 50 and a standard deviation of 5 is known to follow a normal distribution. What is the probability that a randomly selected data point would be greater than 65?
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Use z-scores and the normal distribution table for calculating probabilities.
Question 6.
Assuming a normal distribution of heights where the mean height is 180 cm and the standard deviation is 10 cm, what height value would correspond to the 90th percentile?
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Identify and use z-scores corresponding to percentiles to solve.

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