Answer:
Therefore the Final Solution is x = 2 and y = 7
i.e (2 ,7)
Step-by-step explanation:
Given:
...............Equation ( 1 )
...............Equation ( 2 )
..............Equation ( 3 )
To Find:
x = ?
y = ?
Solution:
Substituting Equation ( 3 ) in Equation ( 1) we get
Now Substituting x = 2 in Equation ( 3 ) we get
Therefore the Final Solution is x = 2 and y = 7
i.e (2 ,7)
Answer:
No. See the explanation below.
Step-by-step explanation:
No. When we have the lineal model given by:
For n observations, where y represent the dependent variable, X represent the independent variable and are the parameters of the model, we are assuming that
is and independent and identically distrubuted variable that follows a normal distribution with the following parameters
.
So then the expected value for any error term is
So then if we find the expected value for any observation we have this:
Now we can distribute the expected value on the right by properties of the expected value like this:
By properties of the expected value if a is a constant and X a random variable, so then if we apply this property we got:
And if we see that'ts not the result supported by the claim for this reason is FALSE the statement.
Answer:
C
Step-by-step explanation:
The central angle is 20% of 360°, that is
central angle = × 360° = 0.2 × 360° = 72° → C