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Data collected at elementary schools in DeKalb County, GA suggest that each year roughly 26% of...

Data collected at elementary schools in DeKalb County, GA suggest that each year roughly 26% of students miss exactly one day of school, 15% miss 2 days, and 26% miss 3 or more days due to sickness.

(a) What is the probability that a student chosen at random doesnt miss any days of school due to sickness this year?
(b) What is the probability that a student chosen at random misses no more than one day?
(c) What is the probability that a student chosen at random misses at least one day?
(d) If a parent has two kids at a DeKalb County elementary school, what is the probability that neither kid will miss any school? Assume that the two kids missing school are independent of each other.
(e) If a parent has two kids at a DeKalb County elementary school, what is the probability that both kids will miss some school, Assume that the two kids missing school are independent of each other.
(f) Is the assumption of independence made for (d) and (e) reasonable?

Math   Statistics-And-Probability   
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