Two forces F, and F2, where F1 = (-41+ ) N and F2 = (i+ 3j – 2k) N, act at the points with position vectors (ai – j+ 3k) m and (-21 + aj – k) m respectively Find (a) the equations of the line of action of F; and F in terms of a. (b) the value of the constant a giveri that the lines of action of F, and F2 intersect.

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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.