SOLUTION: It is known that the “Stats is Awesome” webpage takes on average 7 seconds to load (µ = 7) with a population standard deviation of 2 seconds (σ = 2). What is the probab

Algebra ->  Probability-and-statistics -> SOLUTION: It is known that the “Stats is Awesome” webpage takes on average 7 seconds to load (µ = 7) with a population standard deviation of 2 seconds (σ = 2). What is the probab      Log On


   



Question 1153609: It is known that the “Stats is Awesome” webpage takes on average 7 seconds to load (µ = 7) with a population standard deviation of 2 seconds (σ = 2).

What is the probability that the loading time will be less than 3 seconds? [2 marks]

What is the probability that the loading time will be between 6 and 9 seconds? [4 marks]

Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
That is probability z is less than -2, 2 std dev from the mean (3-7)/2
that is 0.0228
between 6 and 9 is between -.5 sd and +1 sd and that is 0.5328