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:
Y=5x
Step-by-step explanation:
Y=mx+b, or y=rise/run+starting value
as there is no starting value, we would simply add no variable
rise/run in this equation would 5/1 because when it rises 5, it goes right 1, simplifying that would be 5
Answer:
72 feet
Step-by-step explanation:
you'll have to trust me ;)
<span> The </span>midpoints<span> of the </span>sides<span> of the </span>triangle<span> are </span>joined<span> to </span>form another equilateral triangle<span> with </span>sides<span> that are </span>half<span> the leng ... the </span>length<span> of the </span>outer triangle<span>. This </span>process<span> is </span>continued until three triangles<span> are </span>inscribed<span> in the </span>first triangle<span>. The </span>sum<span> of the </span>perimeters<span> of </span>all four triangles<span> is how many </span>inches<span>?</span>
The answer is B. 7 times a number plus 4 would be 7n +4.
