Exhibit 20.6.A fund manager wants to know if the annual rate of return is greater for growth stocks (1) than value stocks (2) .The fund manager collects data on the returns of growth and value funds.Below are the sample sizes and rank sums for the Wilcoxon rank-sum test. 
Refer to Exhibit 20.6.Assuming that W follows a normal distribution,the value of the test statistic is
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