Answer: 
Step-by-step explanation:
The confidence interval for population mean is given by :-
Given : 
n=23, which is a small sample(n<30), so we use t-test.
Significance level: 
Critical value : 
Then , the confidence interval for population mean will be :-
Hence, the 95% confidence interval for the population mean is
Answer:
1) 36 + 50 = 86 : Addition property of equality
2) m<D = m<ADB : If two angles have the same measure, then they are equal.
3) <D congruent to <ADB : if two angle are equal, then they are congruent.
4) <D, <ADB are alternate interior angles: assumed from diagram
5) <u>CD // AB</u> : if alternate interior angles are congruent, then the 2 lines cut by a transversal are //.
6) 130 + 50 = 180 : addition property of equality
7) m<E, m<BAE are supplements : if the sum of two angles equal to 180, then they are supplements.
8) <E, <BAE are same-side interior angles : assumed from diagram
9) <u>EF // AB</u> : if same-side interior angles are supplements, then the 2 lines cut by a transversal are //.
10) <u>CD // EF </u>: if two lines are // to the same line, then they are //.
im pretty sure this is the proof
Answer:
(0.7, -1)
Step-by-step explanation:
To find the coordinates for the midpoint you add each coordinate together and divide by 2.
M = (
)
M = 
M = (0.7, -1)
