he median IQ of high-school students is 100. A teacher wonders whether the median of her class

The median IQ of high-school students is 100. A teacher wonders whether the median of her class is also 100. She checks the IQ scores of 12 of her students, chosen at random, and finds the following scores: 1 10, 98,120, 1 30, 1 1 0, 97, 95, 125, 135, 128, 94, 96. Do a two-tailed Wilcoxon test, at IX = 0.05, of Ho: ji = jio and HI : ji ‘# jio’ Give the value of the test statistic. State whether you accept or reject Ho and give the approximate probability of getting this W given that Ho is true.

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