5. Explain the sampling strategy and potential bias for the following situations. a. Bob is wondering about people that use the Love Library. Bob stands outside the library and asks people walking by into the library questions. b. Alice wants to know how 7th graders and 8th graders at Lemon Grove Middle schools feel about mathematics they are learning. Alice gives numbers to each name of 7th and 8th graders learning mathematics. Alice uses these numbers to make an interval. With this interval, Alice uses a random number generator to produce the numbers, which will be associated with names. The names produced by this method will be the students Alice asks questions to. c. Bob wants to know certain things about people working for a company X. Bob goes to this company's location from 9am to 10am and asks every worker some questions. Bob also goes at4pm to 5pm and asks every worker some questions. d. Bob didn't quite get the information he wanted about the previous company in that survey. Bob reformats his questions before going back to the company. Bob goes to this company at no specific time intervals and asks every third cubicle some questions

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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.