Consider the following two samples. a. Compute the median of each sample to show that they are

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Consider the following two samples.image text in transcribed

a. Compute the median of each sample to show that they are equal.

b. Compute μS, σS, and the value of the test statistic z.

c. Compute the P-value for testing H0: m1 = m2 versus H1: m1 ≠ m2. Do you reject H0? Use the α = 0.05 level of significance.

The rank-sum test is valid under the assumption that the populations have similar shapes. Exercise 17 shows that when the shapes differ considerably, the null hypothesis may be rejected even when the sample medians are equal.

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Elementary Statistics

ISBN: 9781259969454

3rd Edition

Authors: William Navidi, Barry Monk

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