Answered: 7. What is the value of a such that 60%…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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Round probabilities to 4 decimal places, variable values to 2 decimal places

The age at which a given disease occurs in children is normally distributed with a mean of 10 years and a standard deviation of 1.5 years. What is the probability that when a randomly selected child has contracted the disease

7. What is the value of a such that 60% of children get sick when they are over a years old?

8. What is the value of a such that 65% of children get sick when they are less than a years old?

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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