A)
Mean (M) = 50
standard deviation (s) = 10
z value for (<=T) = (T - Mean)/s
z value for (<=45) = (45-50)/10 = -0.5
Probability for z = -0.5 is 0.3085
z value for (<=60) = (60-50)/10 = 1.0
Probability for z = 1.0 is 0.8413
So, probability of values between 45 and 60 = 0.8413-0.3085 = 0.5328
nswer the following TWO questions uestion (1) (30 Marks A) (5 Marks) The time required to build a computer is normally distributed with a mean of 50 minutes and a standard deviation of 10 minutes. Wh...
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