Answered: The amount of coffee that people drink…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Question

The amount of coffee that people drink per day is normally distributed with a mean of 16 ounces and a standard deviation of 6 ounces. 32 randomly selected people are surveyed. Round all answers to 6 decimal places where possible.

1/For the 32 people, find the probability that the average coffee consumption is between 15.9 and 16.4 ounces of coffee per day.

2/For part d), is the assumption that the distribution is normal necessary? YesNo

3/Find the IQR for the average of 32 coffee drinkers.
Q1 =  ounces
Q3 =  ounces
IQR:  ounce

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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