The amount of protein that an individual must consume is different for every person. There are solid theoretical ideas that suggest that the protein requirement will be normally distributed in the population of the United States.The protein requirement is given in terms of the number of grams of good quality protein that must be consumed each day per kilogram body of weight (g P kg1 d1.) The population mean protein requirement for adults is 0.65 g P kg1 d1and the population standard deviation is 0.07 g P kg1 d1.

What proportion of the population have a protein requirement that is less than 0.60 g P kg-1 d-1?(Give your answer as a decimal, accurate to three decimal places.)