The distribution of blood types for 100 Americans is listed in the table. If one donor is selected at random, find the probability of selecting a person with blood type A+ or A-. Blood Type o+ o- a+ a- b+ b- ab+ ab- Number 37 6 34 6 10 2 4 1 a. 0.4 b. 0.06 c. 0.34 d. 0.02
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.
The distribution of blood types for 100 Americans is listed in the table. If one donor is selected at random, find the probability of selecting a person with blood type A+ or A-.
Blood Type | o+ | o- | a+ | a- | b+ | b- | ab+ | ab- |
Number | 37 | 6 | 34 | 6 | 10 | 2 | 4 | 1 |
a. 0.4
b. 0.06
c. 0.34
d. 0.02
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