Math
posted by Molly on .
FiberType HighCalorie LowCalori Totals
High Fiber 18 4 22
Medium Fiber 23 6 29
Low Fiber 12 21 33
Totals 53 31 84
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)?
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)?
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)?
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)?

3. That one cell divided by grand total.
4. total high calorie/grand total + total high fiber/grand total
5. High calorie cell with high fiber/total high fiber
6. Similar process to 5.