Homework SourseBacteria count number of bacteria in a particular culture fo
Bacteria count: number of bacteria in a particular culture follows normal distribution with mean 11 million and standard deviation 2 million. In what proportion of that culture less than 6 million bacteria produced?
Bacteria count: number of bacteria in a particular culture follows normal distribution with mean 11 million and standard deviation 2 million. In what proportion of that culture less than 6 million bacteria produced?
Solution
The proportion of that culture is less than 6 million bacteria produced is
P(X<6) = P((X-mean)/s <(6-11)/2)
=P(Z<-2.5)
=0.0062 (from standard normal table)
