Assume that the people’s ages at the onset of a certain disease have a normal distribution with a mean of 60 years and a standard deviation of 5 years. a. What is the probability that an individual will develop the disease before the age of 50? b. What is the probability that an individual will develop the disease after the age of 65?

Assume that the people’s ages at the onset of a certain disease have a normal distribution with a mean of 60 years and a standard deviation of 5 years. a. What is the probability that an individual will develop the disease before the age of 50? b. What is the probability that an individual will develop the disease after the age of 65?

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.CR: Chapter 13 Review

Problem 58CR

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Question

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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