Answer:
1
Step-by-step explanation:
Add 4+1=5 then do 5÷5=1
width=2
length= 4
explanation in the attached picture
Answer:
1/5^15
Step-by-step explanation:
You use the exponent rule:
a^-b = 1/a^b
Answer:
The correct option is C
Step-by-step explanation:
From the question we are told that
The number of independent variables is 
The number of observation is 
Since n is are independent variables then their degree of freedom is 3
The denominator(i.e z) degrees of freedom is evaluated as



So for the numerator (n) the degree of freedom is Df(n) = 3
So for the denominator(i.e z) the degree of freedom is Df(z) = 43