The length of stay at a specific emergency department in Phoenix, Arizona, in 2009 had a mean of 4.6 hours with a standard deviation of 2.9. Assume that the length of stay is normally distributed. a. What is the probability of a length of stay greater than 10 hours? Ans = Blank 1 b. What length of stay is exceeded by 33% of the visits? Ans = Blank 2 hours

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Final answers should be either in lowest-term Fraction or up to 4 decimal places only. For even smaller numbers, round off to the nearest non-zero digit.

The length of stay at a specific emergency department in Phoenix, Arizona, in 2009 had a mean of 4.6 hours with a
standard deviation of 2.9. Assume that the length of stay is normally distributed.
a. What is the probability of a length of stay greater than 10 hours? Ans = Blank 1
b. What length of stay is exceeded by 33% of the visits? Ans = Blank 2 hours
Transcribed Image Text:The length of stay at a specific emergency department in Phoenix, Arizona, in 2009 had a mean of 4.6 hours with a standard deviation of 2.9. Assume that the length of stay is normally distributed. a. What is the probability of a length of stay greater than 10 hours? Ans = Blank 1 b. What length of stay is exceeded by 33% of the visits? Ans = Blank 2 hours
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