1-2 Less Than 1 Year 3-4 5-9 10-14 15 or More Years RowTotal Years Years Years Years East 32 54 59 112 77 118 452 Midwest 120 63 158 106 31 68 68 173 523 South 53 92 93 158 660 West 41 56 67 78 45 86 373 Column Total 157 270 287 468 291 535 2008
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.
Survey: Customer Loyalty are customers more loyal in the east or in the west? The following table is based on information from Tends in the United Staes, published by the Food Marketing Institute. Washington. D. C. The columns represent length of customer loyality (in years) at a primary supermarket. The rows represent regions of the unites States.
What is the probability that a customer chosen at random
(a) has been loyal 10 to 14 years?
(b) has been loyal 10 to 14 years, given that he or she is from the East?
(c) has been loyal at least 10 years?
(d) has been loyal at least 10 years, given that he or she is from west?
(e) is from the west, given that he or she been loyal less than 1 year?
(f) is from the south, given that he or she has been loyal less than 1 year?
(g) has been loyal 1 or more years,given that he or she is from the East?
(h) has been loyal 1 or more years, given that he or she is from the west?
(i) Are the
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