SOLUTION: It has been determined that the wait-time for a particular doctor is normally distributed with a mean of 28 minutes and a standard deviation of 2 minutes. What is the probability t
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Question 285612: It has been determined that the wait-time for a particular doctor is normally distributed with a mean of 28 minutes and a standard deviation of 2 minutes. What is the probability that you will wait between 26 and 32 minutes? Please round the answer to four decimal places. Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! It has been determined that the wait-time for a particular doctor is normally distributed with a mean of 28 minutes and a standard deviation of 2 minutes. What is the probability that you will wait between 26 and 32 minutes? Please round the answer to four decimal places.
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Find the z-score of 26 and of 32 minutes:
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z(26) = (26-28)/2 = -1
z(32) = (32-28)/ = 2
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P(26< x < 32) = P(-1 < z < 2) = 0.8186
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Cheers,
Stan H.
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