Answered: Researchers wanted to know whether…

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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Researchers wanted to know whether seeded clouds would produce more rainfall. An experiment was conducted in Tasmania between 1964 and 1971, and rainfall amounts were measured in inches per rainfall period for randomly selected locations in the western Tasmania. Clouds were coded as either seeded (Seeded = S) or unseeded (Seeded = U).
Use Wilcoxon test to test whether rainfall amounts in western Tasmania is different for seeded and unseeded clouds at 1% level of significance.

Seeded	Rainfall
S	0.86
S	1.43
S	4.61
S	3.17
S	3.31
S	4.29
S	1.83
S	0.61
S	3.56
S	0.8
S	1
S	1.32
S	1.23
S	0.84
U	1.36
U	3.06
U	4.3
U	1.15
U	0.64
U	6.71
U	2.01
U	0.99
U	1.25
U	0.69
U	0.43
U	1.37
U	2.39
U	6.15

How many samples of data are being compared in this study?

Report the test statistic. ________
p-value =________ (Give answer to 4 decimal places)

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