Lice are a pesky problem for school aged children and is unrelated to cleanliness. The lifetimes of lice that have fallen off the scalp onto bedding is approximatley normally distributed with a mean of 2.2 days and a standard deviation of 0.4 days. We would expect that approximately 90% of the lice would die within about:
a. | 3.9 days |
b. | 3.0 days |
c. | 2.5 days |
d. | 2.7 days |
e. | 2.6 days |
DATE
Question answered on Jul 22, 2018
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Solution~000447665.zip (18.37 KB)