International Journal of Obesity (2007) 31, 189196
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The relationship between body mass index and healthrelated quality of life: comparing the EQ-5D,
Answer each of the following with the best possible answer. Remember to show your work on problems so
that you might get partial credit.
Part A: Below you will find a description of a number
1. The distribution of the population of scores on an Introductory Chemistry course quiz was
approximately normal, with = 35 and =6. An administrator thinks a new tutoring program for
the course will work
Answer each of the following with the best possible answer.
Define a random sample (2)
_ 2. A _ sample over or under-selects from one group in the population (2)
b. externally valid