# Gradford_week4lab__word - fiber = 18/22 = 0.8182 6 What is...

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Math 221 Week 4 Lab Submitted by: Gradford, Theodore Part 1. Cross-Reference Tables and Probability 1. What is the probability that the cereal would be high calorie? In other words, what is P(high calorie)? P(high calorie) = 53/84=0.6310 2. What is the probability that the cereal would be high fiber? In other words, what is P(high fiber)? P(high fiber) = 22/84 =0.2619 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)? is P(high calorie and high fiber) = 18/84 = 0.2143 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)? P(high calorie or high fiber)= P(high calorie)+P(high fiber) = 0.8920 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)? P(high calorie, given high

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Unformatted text preview: fiber) = 18/22 = 0.8182 6. What is the probaility that a cereal would be high calorie, given that is is low fiber? In other words, what is P(high calorie, given low fiber)? P(high calorie, given low fiber) =12/13=0.9231 7. Regarding Questions 5 and 6, how might you interpret this information as a consumer? Consumers with high calorie with low fibre is more than consumers with high claorie high fibre 8. Using the simple test of independence (described in the lecture), decide if the events high calorie and high fiber are independent or dependent. Show your work. Null hypothesis: the calorie level is independent of fibre type Alternative hypotheis: the calorie level is dependent of fibre type 9. Discuss how the Excel command "countif" was used in the table above. Why were the ranges (such as f2:f23) used as they were? This function counts the number of cells in a range, that meets a given criteria...
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Gradford_week4lab__word - fiber = 18/22 = 0.8182 6 What is...

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