The distribution of total body protein in healthy adult men is approximately Normal with mean 12.3 kg and standard deviation 0.1 kg.
What is the minimum total body protein for the upper 75% of healthy adult men?

Question

Quizplus · Accepted Answer

To find the minimum total body protein for the upper 75%, we need to find the 25th percentile of the distribution. For a standard normal distribution, the z-score corresponding to the 25th percentile is approximately -0.675. Using the formula: X = μ + zσ, where μ = 12.3 kg and σ = 0.1 kg, we get X = 12.3 + (-0.675)(0.1) = 12.2325 kg, which rounds to 12.23 kg.

The Distribution of Total Body Protein in Healthy Adult Men