Suppose body mass index (BMI) varies approximately to the normal distribution in a population of boys aged 2-20. A national survey analyzed the BMI for American adolescents in this age range and found the µ=17.8 and the σ=1.9. At most, what percentage of BMI is less than 10.2? (Using Chebyshev's theorem.)
I found that σ=4, so I did 1- (1)/(16).
Then, since that represents P(10.2 < x < 25.4)
I did 1 - 0.975 and then divided 2 from that answer. Is this right?
I found that σ=4, so I did 1- (1)/(16).
Then, since that represents P(10.2 < x < 25.4)
I did 1 - 0.975 and then divided 2 from that answer. Is this right?