Answered: To study how water pollution has…

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

To study how water pollution has affected fishery, a scientist randomly selected 8 lakes of Florida. For each lake, the level of mercury contamination in largemouth bass (mg/kg) and the amount of alkalinity (mg/L) in lake water are collected. Choose a statistical method and determine and test the correlation between alkalinity and largemouth bass mercury contamination. Choose a method and test whether the level of mercury contamination in largemouth bass follows a normal distribution.

Lake
Mercury Alkalinity
Lake
Mercury Alkalinity
Alligator
Deer Point
George
1.3
Brick
1.3
3
0.7
27
Eaton
0.5
25
0.2
84
Kissimmee
0.5
30
Shipp
0.2
67
Trafford
0.3
82

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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