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Q2. Observation from two random and independent samples, drawn from population 1 and 2, are given below. Use the Wilcoxon rank sum test to determine whether population I is shifted to the left of population 2. Sample 1 Sample 2 (1) State the null and alternative hypotheses to be tested. 33 61 20 19 40 26 36 65 25 35 (2) Rank the combined sample from smiallest to largest. Calculate T,. T (3) What is the rejection at a = 0.05? (4) State your conclusion.

Q2. Observation from two random and independent samples, drawn from population 1 and 2, are given below. Use the Wilcoxon rank sum test to determine whether population I is shifted to the left of population 2. Sample 1 Sample 2 (1) State the null and alternative hypotheses to be tested. 33 61 20 19 40 26 36 65 25 35 (2) Rank the combined sample from smiallest to largest. Calculate T,. T (3) What is the rejection at a = 0.05? (4) State your conclusion.

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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Q2. Observation from two random and independent samples, drawn from population 1 and 2, are given below. Use the Wilcoxon rank sum test to determine whether population 1 is shifted to the left of population 2. Sample 1 Sample 2 (1) State the null and alternative hypotheses to be tested. 33 61 20 19 40 26 36 65 25 35 (2) Rank the combined sample from sniallest to largest. Calculate T,, T, (3) What is the rejection at a = 0.05? (4) State your conclusion. Q3. Based on Q2. Answer the following: (a) Calculate Spearman's rank correlation coefficient. (b) Do the data present sufficient evidence to indicate a correlation between sample 1 and 2? Use a = 0.05.
Transcribed Image Text:Q2. Observation from two random and independent samples, drawn from population 1 and 2, are given below. Use the Wilcoxon rank sum test to determine whether population 1 is shifted to the left of population 2. Sample 1 Sample 2 (1) State the null and alternative hypotheses to be tested. 33 61 20 19 40 26 36 65 25 35 (2) Rank the combined sample from sniallest to largest. Calculate T,, T, (3) What is the rejection at a = 0.05? (4) State your conclusion. Q3. Based on Q2. Answer the following: (a) Calculate Spearman's rank correlation coefficient. (b) Do the data present sufficient evidence to indicate a correlation between sample 1 and 2? Use a = 0.05.
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