Answered: Each people drink different amount of…

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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Each people drink different amount of water.

Suppose we create random variable X for the amount of water of a random person. We try to model X using norming distribution.

a) Give at least 4 reasons why the normal distribution might no work.

b) Let says the model from part a works. Suppose X ~ N(100,20). How many gallons a person drink if he is at 70% of the distribution.

c) doctor recommends X ~ (120, n) where n is unknown. Find n if a person is the 20% of least consuming water and drink 105 gallons or fewer.

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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