Answer:
a)
b)
c)
Step-by-step explanation:
Part a
For this case we know that the degrees of freedom are:
And we want a right tailed test so then we need to find in the t distribution with degrees of freedom =15 a critical value who accumulate 0.05 of the area in the right and we got:
Part b
For this case the significance is the degrees of freedom are:
And since is a left tailed test the critical value for this case would be:
Part c
For this case the significance is and the degrees of freedom are:
And since is a two tailed test the critical values for this case would be:
-0.05 is larger. Since they're negative, you're going by which is closer to 0 rather than farther. -0.05 is closer to 0 on a number line, so it's larger than -0.25.
Answer:
Because alternate exterior angles are congruent
Step-by-step explanation:
Answer:
Step-by-step explanation:
Im going to assume a faction greater than one means an improper fraction.
Converting gets which simplified is
Answer:
Step-by-step explanation:
<u>Given </u><u>:</u><u>-</u><u> </u>
And we need to find out the ordered pair is the solution of the system . The system is ,
We can see that the signs of x are opposite in the given equation .So on adding we can eliminate x .
<u>On </u><u>adding</u><u> </u><u>the</u><u> </u><u>equations </u><u>:</u><u>-</u><u> </u>
<u>Substitute</u><u> </u><u>for</u><u> </u><u>y </u><u>:</u><u>-</u><u> </u>
<u>Hence </u><u>the</u><u> </u><u>value </u><u>of </u><u>x </u><u>is </u><u>-</u><u>1</u><u> </u><u>and </u><u>y </u><u>is </u><u>1</u><u> </u>