Exhibit 12

question 87

Multiple Choice

Exhibit 12.8 The heights (in cm) for a random sample of 60 male employees of S&M Construction Company were measured.The sample mean is 166.5,the standard deviation is 12.57,the sample kurtosis is 0.12,and the sample skewness is -0.23. Refer to Exhibit 12.8.Suppose the null hypothesis of normality is rejected.Which of the following is a valid conclusion?

• A)The heights have a normal distribution
• B)Not being able to determine the heights means it does not have a normal distribution
• C)The heights do not have a normal distribution
• D)Not being able to determine the heights means it has a normal distribution

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