For 8-10 items, refer to the situation below: The body mass index is calculated by dividing a person's weight by the square of his/her height. That is, body mass index equals weight/(height). This measure determines whether a person is overweight or not. Suppose that a person is overweight if his/her body mass index is above 24 kg/m² and a random sample of 20 individuals from a certain place have the following body mass indices: 24.2 33.1 24.2 29.9 30.4 32.8 17.5 23.1 28.7 24.2 22.0 29.0 35.9 18.5 27.8 29.4 19.6 28.5 28.2 25.7 8. What is the mean body mass index of the random sample of 20 individuals and its standard deviation respectively? a. 26.64 and 4.96 b. 25.54 and 4.97 c. 26.54 and 4.96 d. 26.55 and 4.97 9. What distribution will be used in calculating the given situation? a.x-distribution b. z-distribution c. s-distribution d. t-distribution 10. What is the calculated test statistic of the given situation? b. 4.38 d. 2.38 a. 5.38 C. 3.38

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