1) What is the shape of the normal distribution? a) U-shaped b) J-shaped c) Bell-shaped 2) What is the mean of a standard normal distribution? a) 0 b) 1 c) -1 3) What is the standard deviation of a standard normal distribution? a) 0 b) 1 c) -1 4) True or False: In a normal distribution, the mean, median, and mode are all equal. a) True b) False 5) What percentage of data falls within one standard deviation of the mean in a normal distribution? a) Approximately 34% b) Approximately 68% c) Approximately 95% 6) What percentage of data falls within two standard deviations of the mean in a normal distribution? a) Approximately 34% b) Approximately 68% c) Approximately 95% 7) What is the z-score formula? a) (x - μ) / σ b) (x - μ) * σ c) (x + μ) / σ 8) In a normal distribution, what is the area under the curve to the left of the mean? a) 0% b) 25% c) 50% 9) In a normal distribution, what is the area under the curve to the right of the mean? a) 0% b) 25% c) 50% 10) What is the area under the entire normal distribution curve? a) 100% b) 90% c) 80%

Normal Distribution

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