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)

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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) About Me  (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.