Blood Types: Part A The most useful blood type for transfusions is blood type O- or "O-negative", because people with this blood type are considered "universal donors" as this blood won't be rejected by the recipient. Only 7.0% of the population of Canada have a blood type of O-negative, in other words only 7 out of 100 people have this blood type in Canada. If you walked down the street and spoke with people completely at random, what is the expected number of people you would need to talk to until you found someone with this blood type? What is the standard deviation for the number of people you would need to talk to until you found someone with this blood type? Show your calculations below and make sure to clearly indicate both the expected number of people as well as the standard deviation, each rounded to 2 decimal places. Blood Types: Part B Given that 7.0% of the population of Canada have blood type O-negative, calculate the probability that you would ask exactly 19 people at random about their blood type before person number 19 would have this blood type. Write your answer as a percentage rounded off to 2 decimal places.
Contingency Table
A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.
Binomial Distribution
Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.
Blood Types: Part A
The most useful blood type for transfusions is blood type O- or "O-negative", because people with this blood type are considered "universal donors" as this blood won't be rejected by the recipient. Only 7.0% of the population of Canada have a blood type of O-negative, in other words only 7 out of 100 people have this blood type in Canada.
If you walked down the street and spoke with people completely at random, what is the expected number of people you would need to talk to until you found someone with this blood type? What is the standard deviation for the number of people you would need to talk to until you found someone with this blood type?
Show your calculations below and make sure to clearly indicate both the expected number of people as well as the standard deviation, each rounded to 2 decimal places.
Blood Types: Part B
Given that 7.0% of the population of Canada have blood type O-negative, calculate the
Write your answer as a percentage rounded off to 2 decimal places.
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