Answer:
b
Step-by-step explanation:
Given:
n = 27, sample size
df = n-1 = 26, degrees of freedom
xb = 11.8, sample mean
s = 2.3, sample standard deviation.
Because population statistics are not known, we should use the Student's t-distribution.
At 99% confidence interval, the t-value = 2.779 (from tables).
The confidence interval is
11.8 +/- 2.779*(2.3/√(27)) = 11.8 +/- 1.23 = (10.57, 13.03)
Answer: (10.6, 13.0) to the nearest tenth
The answer to <span>H+12.5=-12.5</span> is H=-25
Answer:
The answer is D.
Step-by-step explanation:
Since there is a triangle with angles A, D, and G. Another congruent triangle has angles B, C, and E. This means that angle E is congruent to angle G.
