Answer to Question #155901 in Statistics and Probability for bert

Question

consider that in a population of Filipino adults ages 18 to 65, Body Mass index (BMI) is normally distributed with mean of 28 and a standard deviation of 6.(A) what is the BMI marks the bottom 10%of the distribution for this population? (b) What BMI marks the bottom 10% of the distribution for this population?

Answer 1

P(x<z) = 0.1

z = -1.282

X = $z*\sigma+\mu=-1.282*6+28=20.3$

Answer: 20.3

P.S. A and B are identical questions.