SOLUTION: A study found that the mean waiting time to see a physician at an outpatient clinic was 40 minutes with a standard deviation of 28 minutes. Use Excel to find each probability. (a)

Question 246183: A study found that the mean waiting time to see a physician at an outpatient clinic was 40 minutes
with a standard deviation of 28 minutes. Use Excel to find each probability. (a) What is the probability of more than an hour�s wait? (b) Less than 20 minutes? (c) At least 10 minutes.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
A study found that the mean waiting time to see a physician at an outpatient clinic was 40 minutes
with a standard deviation of 28 minutes. Use Excel to find each probability. (a) What is the probability of more than an hour�s wait?
P(x > 60 min) = 1 - P(0<= x <= 60) = 0.3141
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(b) Less than 20 minutes?
P(0 <= x <= 20) = 0.1610
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(c) At least 10 minutes.
P(x >= 10) = 1- P(0<= x < 10) = 0.9346
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Cheers,
Stan H.
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