Normal Distribution
Normal Distribution Siva Prasad Balsubramaniyam October 24, 2017 knitr::opts_chunk$set(echo = TRUE)
Question 1 Assume cholesterol levels of adult women can be described by a normal model with a mean of 188 mg/dL and a standard deviation of 24 mg/dL. (a) What percent of adult women do you expect to have cholesterol levels over 200 mg/dL? 1- pnorm(200,188,24) ## [1] 0.3085375 #
pnorm(0.5,0,1)
(b) What percent of adult women do you expect to have cholesterol levels between 150 and 170 mg/dL? pnorm(170,188,24) - pnorm(150,188,24) ## [1] 0.1699546 (c) Estimate the IQR of the cholesterol levels. iqrbp
Question 1 Assume cholesterol levels of adult women can be described by a normal model with a mean of 188 mg/dL and a standard deviation of 24 mg/dL. (a) What percent of adult women do you expect to have cholesterol levels over 200 mg/dL? 1- pnorm(200,188,24) ## [1] 0.3085375 #
pnorm(0.5,0,1)
(b) What percent of adult women do you expect to have cholesterol levels between 150 and 170 mg/dL? pnorm(170,188,24) - pnorm(150,188,24) ## [1] 0.1699546 (c) Estimate the IQR of the cholesterol levels. iqrbp
