8. If the weights of males are normally distributed with mean = 170 and standard deviation = 20, what weight (to the nearest pound) would correspond with the 40th percentile?
A) 68
B) 165
C) 175
D) 162
E) none of the above

The american academy of pediatrics wants to conduct a survey of recently graduated family practitioners to assess why they did not choose pediatrics for their specialization. provide a definition of the population, suggest a sampling frame, and indicate the appropriate sampling unit.