Your answer is gonna be 56
some explanation stuff if needed :
8 questions, and your teacher will choose 5. The order doesn’t matter just whether or not they’re on the test!
Thats a combination (permutation is where the order matters).
nCr= (n!)/(n-r)!·r!
n is the number of options
r is the number you choose
! is “factorial” (multiplying every whole number down the 1; ex: 4! = 4·3·2·1 = 24)
so lets substitute:
n= 8 questions from which to choose
r= 5 the number the teacher will choose
8C5= (8!)/(8-5)!·5!
= (8!)/(3)!·5!
= (8·7·6·5·4·3·2·1)/(3·2·1)·(5·4·3·2·1)
= 40,320/(6)·(120)
= 40,320/720
= 56
There are 56 possible combinations of 5 questions your history teacher could choose.
hope i helped :)
~ mo
Answer:
See the explanation below.
Step-by-step explanation:
a. For this sample of paired data, what does r represent, and what does rho represent?
r stands for the correlation coefficient value that is normally estimated by pairing the sample data.
rho refers to parameter that is employed to denote the linear correlation coefficient value that is intended to be calculated by employing the every paired data in the population of all statistics students.
b. Without doing any research or calculations, estimate the value of r.
The computed value of r is 0.
The reason is that it is possible that no correlation exist between body temperature and head circumference.
c. Does r change if body temperatures are converted to Fahrenheit degrees?
This will make the value of r to change.
The reason is that when the all values of a variable is changed to another scale, it will have any influence on the value of r.
Answer:
the answer of the question is b. 8.2 mm
Answer:
a
Step-by-step explanation: