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 approximate probability that a randomly selected healthy man has a total body protein between 12.1 and 12.2 kg?

Question

Quizplus · Accepted Answer

We need to calculate the probability of a randomly selected healthy man having a total body protein between 12.1 and 12.2 kg. 
Using the standard Normal distribution formula, we can standardize the values as follows:
z1 = (12.1 - 12.3) / 0.1 = -2
z2 = (12.2 - 12.3) / 0.1 = -1
Now, we need to find the area under the Normal curve between -2 and -1. 
Using a standard Normal distribution table or calculator, we can find this area to be approximately 0.1359. 
Therefore, the answer is B.

The Distribution of Total Body Protein in Healthy Adult Men