Math 221
Week 4 Lab
Submitted by:
Carlyle Brown
Part 1.
CrossReference Tables and Probability
1.
What is the probability that the cereal would be high calorie? In other words, what is P
(high calorie)?
53/84 = 0.630952381
2.
What is the probability that the cereal would be high fiber? In other words, what is P
(high fiber)?
22/84 = 0.261904762
3.
What is the probability that a cereal would both high calorie and high fiber? In other
words, what is P (high calorie and high fiber)?
18/84 = 0.214285714
4.
What is the probability that a cereal would either high calorie or high fiber? In other
words, what is P (high calorie or high fiber)?
(53+ 22 – 18) /84 = 0. 0.678571429
5.
What is the probability that a cereal would be high calorie, given that it is high fiber?
In other words, what is P (high calorie, given high fiber)?
18/22 = 0.82
6.
What is the probability that a cereal would be high calorie, given that is low fiber?
In
other words, what is P (high calorie, given low fiber)?
12/33 = .36
7.
Regarding Questions 5 and 6, how might you interpret this information as a
consumer?
82% of High Fiber Cereal is High Calorie & 36% of Low Fiber Cereal is
High Calorie
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 Spring '10
 Sampath
 Math, Poisson Distribution, Probability, Probability theory, Binomial distribution, high calorie

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