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Exhibit 12.7 The heights (in cm) for a random sample of 60 males were measured.The sample mean is 166.55,the standard deviation is 12.57,the sample kurtosis is 0.12,and the sample skewness is -0.23.The following table shows the heights subdivided into non-overlapping intervals. Refer to Exhibit 12.7.Suppose the value of the test statistic is 7.71.Using the critical value approach,decision and conclusion are:
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