Answered: Which is NOT a correct statement about…

Calculus For The Life Sciences

2nd Edition

ISBN:9780321964038

Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.

Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.

Chapter13: Probability And Calculus

Section13.3: Special Probability Density Functions

Problem 7E

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Question

Which is NOT a correct statement about 68-95-99.7 rule?

Any normally distributed variable in the population, 68% of observations fall within 1 standard deviations of the mean in the normal distribution

If we measure the normally distributed variable in the population from a randomly selected 100 individuals, 95% of observations will fall within 2 standard deviations of the mean in the normal distribution

99.7% of the area under the Nomral curve lies within 3 standard deviation from the mean

None of above

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

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