Every confidence interval has associated z value. As confidence interval increases so do the z value associated with it.
The confidence interval can be calculated using following formula:

Where

is the mean value, z is the associated z value, s is the standard deviation and n is the number of samples.
We know that standard deviation is simply a square root of variance:

The confidence interval of 95% has associated z value of <span>1.960.
</span>Now we can calculate the confidence interval for our income:
9514 1404 393
Answer:
(a) 231°
Step-by-step explanation:
arc WYZ = arc WX + arc XYZ
arc WYZ = 51° +180° . . . . . XZ is a diameter, substitute known arc measures
arc WYZ = 231°
Answer:
497,725
just subtract smallest from largest to get the difference
724,435 - 226,710
Answer: No solution
Step-by-step explanation:
(10–3)–2=10–(3–)
10−3−2=10−3, this is false so it is not correct, and the answer for the equation is no solution.
Answer:
2/3 = a/b
Step-by-step explanation:
6/9 = a/b
2/3 = a/b