As an assignment for her Psychology class in College, Elena is conducting an experiment to determine if high school students are more relaxed when the lights are off or when music is played during an exam. She selects 10 of her friends to take an exam with the lights off and another 10 of her friends to take an exam with music playing. What is problematic about the way that Elena selected her groups? Question 5 options: a) Elena did not select students at random from a typical high school. b) Elena did not have to select high school students. c) There is nothing wrong with how Elena selected her groups. d) Elena should have selected the first 20 students from the local high school that she ran into at the mall.
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.
As an assignment for her Psychology class in College, Elena is conducting an experiment to determine if high school students are more relaxed when the lights are off or when music is played during an exam.
She selects 10 of her friends to take an exam with the lights off and another 10 of her friends to take an exam with music playing.
What is problematic about the way that Elena selected her groups?
Question 5 options:
a)
Elena did not select students at random from a typical high school.
b)
Elena did not have to select high school students.
c)
There is nothing wrong with how Elena selected her groups.
d)
Elena should have selected the first 20 students from the local high school that she ran into at the mall.
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