1. There are 3 defective rolls out of 10 rolls of film in a box. Two rolls are to be selected for developing, one at a time, without replacement. a) What is the probability that first roll selected is a defective and the second roll selected is defective? b) What is the probability both are NOT defective? c) What is the probability at least one is NOT defective?
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.
1. There are 3 defective rolls out of 10 rolls of film in a box. Two rolls are to be selected for developing, one at a time, without replacement.
a) What is the
b) What is the probability both are NOT defective?
c) What is the probability at least one is NOT defective?
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