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. i. What is the probability of going 200 or more days between colds?  ii. What is the probability of getting a cold within 80 days of a previous cold?

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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.

i. What is the probability of going 200 or more days between colds? 

ii. What is the probability of getting a cold within 80 days of a previous cold? 

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