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Name: A scientist is tasked with understanding the rate at which a pesticide
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Description: A scientist is tasked with understanding the rate at which a pesticide is absorbed into human skin after contact. It's important to understand if the amount in the skin continues to increase over time. To investigate this, measured amounts of a certa

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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A scientist is tasked with understanding the rate at which a pesticide is absorbed into human skin after contact. It's important to understand if the amount in the skin continues to increase over time. To investigate this, measured amounts of a certain pesticide were applied to 38 random samples of rat skin. The rats were randomly put into groups and analyzed at eight time intervals. Complete the following ANOVA summary table and use it to make a decision about pesticide absorption into skin with a 10% significance level. It has been confirmed from statistical analysis that each group comes from an approximately normal distribution with approximately equal variances.
Round to the fourth as needed

Source	SS	df	MS	F	P-value
Between (Factor)			26
Within (Error)	134
TOTAL

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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