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:
Definitions:
Relational Aggression
A form of aggressive behavior that harms others through intentional manipulation or damage to their social relationships.
Rapport Talk
A way of communication aimed at establishing connections and building relationships, often characterized by shared experiences, emotions, and personal stories.
Report Talk
A communication style that focuses on exchanging information, often used in more public settings and characterized by facts and logic.
Meta-analysis
Meta-analysis is a statistical procedure that integrates the results of multiple scientific studies to reach a more comprehensive conclusion regarding a particular question or hypothesis.
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