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chi" disks are used to determine the clarity of natural wate is lowered into the water until the observer can no longer = no longer visible is a measure of the clarity of the water. al engineer has purchased a new Secchi disk to replace his one away, he needs to determine if the new disk yields co "Secchi depth" of 10 lakes, with the following results: Disk New Disk

chi" disks are used to determine the clarity of natural wate is lowered into the water until the observer can no longer = no longer visible is a measure of the clarity of the water. al engineer has purchased a new Secchi disk to replace his one away, he needs to determine if the new disk yields co "Secchi depth" of 10 lakes, with the following results: Disk New Disk

MATLAB: An Introduction with Applications
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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1. "Secchi" disks are used to determine the clarity of natural waters. The test is simple: the disk is lowered into the water until the observer can no longer see it. The depth at which the disk is no longer visible is a measure of the clarity of the water. An environmental engineer has purchased a new Secchi disk to replace his old one. Before throwing the old one away, he needs to determine if the new disk yields comparable values. He measures the "Secchi depth" of 10 lakes, with the following results: Lake A B C D E F G H I J Old Disk 25 10 7 12 19 4 30 8 37 11 New Disk 24 8 7 10 18 4 25 9 31 13 Determine whether the two disks yield significantly different values. Use a significance level of a = 0.05.
Transcribed Image Text:1. "Secchi" disks are used to determine the clarity of natural waters. The test is simple: the disk is lowered into the water until the observer can no longer see it. The depth at which the disk is no longer visible is a measure of the clarity of the water. An environmental engineer has purchased a new Secchi disk to replace his old one. Before throwing the old one away, he needs to determine if the new disk yields comparable values. He measures the "Secchi depth" of 10 lakes, with the following results: Lake A B C D E F G H I J Old Disk 25 10 7 12 19 4 30 8 37 11 New Disk 24 8 7 10 18 4 25 9 31 13 Determine whether the two disks yield significantly different values. Use a significance level of a = 0.05.
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