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
Answer:
0.2
Step-by-step explanation:
it just is. look it up they will have an explanation
A.<span>If an angle is an acute angle, then the angle measures less than 90 degrees.</span>
Answer:
B
Step-by-step explanation:
Factors are the two numbers which you multiply to get your product which is the equivalent of a sum in multiplication terms. You are multiplying two and nine in this scenario so they'd be the factors.
