Complete the two-column proof by providing the missing statements or reasons. Given:
ABCD is rhombus
Prove: ∠1≅∠2

StatementReason
1.1. Given
2. AD = BC = CD = BA 2.
3. DO = OB ; AO = OC 3. Diagonals of a parallelogram bisect each other.
4.△DOC ≅△BOA 4.
5.∠1 ≅∠2 5.

A. (-2.28, 3.38)

Step-by-step explanation:

The confidence interval of the slope :

b ± Tcritical*SE

Tcritical at 95%, df = n - 2 = (15 - 2) = 13

Tcritical = 2.160369

b = slope Coefficient = 0.54924

S.E = 1.311

Hence, we have :

Confidence interval = 0.54924 ± (2.160369 * 1.311)

Confidence interval = 0.54924 ± 2.832243759

Lower boundary = 0.54924 - 2.83224 = - 2.283

Upper boundary = 0.54924 + 2.83224 = 3.3814

The answer option is A. (-2.28, 3.38)