Answered: Determine what is asked for, and write…

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

Determine what is asked for, and write the complete solution for each number.

1. A seller claimed that her lip tint has a mean organic content of 90%. A rival seller
asked 60 users of that lip tint and found that it has a mean organic content of 85% with
a standard deviation of 5%. Test the claim at 1% level of significance and assume that
the population is approximately normally distributed.

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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