One study classified a group of adults, their need to wear glasses, as follows: used glasses to read It was determined that they needed glasses Sí No yes .45 .15 No .05 .50 If only one adult is selected from that group, determine the probability: a) That the adult needs glasses. b) That the adult needs reading glasses but does not use them. c) The adult wears glasses to read, whether they need them or not.
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.
- One study classified a group of adults, their need to wear glasses, as follows:
|
|
used glasses to read |
|
|
It was determined that they needed glasses |
Sí |
No |
|
yes |
.45 |
.15 |
|
No |
.05 |
.50 |
If only one adult is selected from that group, determine the probability:
a) That the adult needs glasses.
b) That the adult needs reading glasses but does not use them.
c) The adult wears glasses to read, whether they need them or not.
Step by step
Solved in 2 steps with 2 images
