SOLUTION: Medical research has concluded that people experience a
common cold roughly two times per year. Assume that the
time between colds is normally distributed with a mean of
160 day
Algebra.Com
Question 1160785: Medical research has concluded that people experience a
common cold roughly two times per year. Assume that the
time between colds is normally distributed with a mean of
160 days and a standard deviation of 40 days.
(a) What is the probability of going 200 or more days between
colds? Of going 365 days?
(b) What is the probability of getting a cold within 80 days of a
previous cold?
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
Compute the 
-score for each of your situations and then look up the probability of each of the -scores in a table or use Excel or a statistics calculator.
John
My calculator said it, I believe it, that settles it
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