The following table shows the inventory of blood types at a blood bank. O A B AB Totals Rh Positive 140 121 32 10 303 Rh Negative 29 22 8 2 61 Totals 169 143 40 12 364 Find the following probabilities from randomly selected blood donations without replacement. a. Calculate P(At least one Type B from 4 draws) = b. Calculate P(Type O or Rh-Positive) = c. Calculate P(Getting a Type B, given it’s Rh-Negative) = d. Calculate P(Getting a Rh-Positive, given it’s Type
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 following table shows the inventory of blood types at a blood bank.
|
O |
A |
B |
AB |
Totals |
|
|
Rh Positive |
140 |
121 |
32 |
10 |
303 |
|
Rh Negative |
29 |
22 |
8 |
2 |
61 |
|
Totals |
169 | 143 | 40 | 12 | 364 |
Find the following probabilities from randomly selected blood donations without replacement.
a. Calculate P(At least one Type B from 4 draws) =
b. Calculate P(Type O or Rh-Positive) =
c. Calculate P(Getting a Type B, given it’s Rh-Negative) =
d. Calculate P(Getting a Rh-Positive, given it’s Type O) =
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