A recent study shows that 18% of adults in the US do not use the Internet. Suppose that 12 adults are randomly selected in the US. a)Construct the PMF of X, the number of adults who don't use internet in this group. b)What is the expected value and standard deviation of X? c)What is the probability that at least 1 of the adults does not use the Internet? a) Copy the PMF here X f(X) Final Answer b) Mean = Std =
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.
A recent study shows that 18% of adults in the US do not use the Internet. Suppose that 12 adults are randomly selected in the US.
a)Construct the PMF of X, the number of adults who don't use internet in this group.
b)What is the
c)What is the probability that at least 1 of the adults does not use the Internet?
a) Copy the PMF here | |
X | f(X) |
Final Answer | |
b) Mean = | |
Std = | |
c) |
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