Answer:
The students can be paired up in 654,729,075 ways
Step-by-step explanation:
The 20 people can organize themselves in a line. The first and second people can make up a pair, the 2nd and 3rd can do the same. This can be done until all 20 of them have a pair. This will be done in 20! ways
If the two people in a pair swap positions. In mathematics, it is considered as a different arrangement. This can be done 
since there are 10 pairs We will have to divide by this.
If the 10 pairs can swap places with each other, it will form another pair. As a matter of fact, the 10 pairs can swap pairs with each other all they like. This can be done in 10! ways. we will also have to divide by this.
Hence the total number of ways = 
Si = prt
Si = 1260 (0.03) (2)
Si= 1260 (0.06)
Si = 75.60.
So it’s 1260 + 75.60 = $ 1335.60
Answer:
0
Step-by-step explanation:
f(5) = 5-5
f(5) = 0
_________________
Answer:
A
Step-by-step explanation:
Simple linear regression is a statistical method that summarizes and study relationships between two continuous quantitative variables.
One variable is regarded as the predictor, explanatory, or independent variable and the other variable is regarded as the response, outcome, or dependent variable.
Two variables can be denoted by X and Y.
Among the given options, the correct option is A. After conducting a hypothesis test to test that the slope of the regression equation is nonzero, you can conclude that your predictor variable, X, causes Y
The residual value is -1.14.
Plug 5 into x
y=-0.7(5)+2.36
=-1.14
