SOLUTION: The times per week a student uses a lab computer are normally distributed, with a mean of 6.4 hours and a standard deviation of 1.1 hours. A student is randomly selected. Determine

Algebra ->  Probability-and-statistics -> SOLUTION: The times per week a student uses a lab computer are normally distributed, with a mean of 6.4 hours and a standard deviation of 1.1 hours. A student is randomly selected. Determine      Log On


   

Question 1139219: The times per week a student uses a lab computer are normally distributed, with a mean of 6.4 hours and a standard deviation of 1.1 hours. A student is randomly selected. Determine the probability that the student uses a lab computer less than 5 hours per week.
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
z=(x-mean)/sd
<(5-6.4)/1.1
<-1.27
That probability is 0.1020.