In an exam attended by 600 people, the average of the grades is 60 and the standard deviation is 10.2, showing a normal distribution. From this population, 50 samples of n=36 people were taken to the returned lottery. How many samples are there with an average of less than 65? a) 36 B) 19 C) 14 D) 23 E) 30
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.
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In an exam attended by 600 people, the average of the grades is 60 and the standard deviation is 10.2, showing a
a) 36
B) 19
C) 14
D) 23
E) 30
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