Pretty sure I can't give you test answers
Answer:
The margin of error for a confidence interval for the population mean with a 90% confidence level is 0.53 hours.
Step-by-step explanation:
We have that to find our 
level, that is the subtraction of 1 by the confidence interval divided by 2. So:
Now, we have to find z in the Ztable as such z has a pvalue of 
.
So it is z with a pvalue of 
, so 
Now, find the margin of error M as such
In which 
is the standard deviation of the population and n is the size of the sample.
In this quesstion:
So
The margin of error for a confidence interval for the population mean with a 90% confidence level is 0.53 hours.
6 pencils = 2 rulers
1ruler= 2 eraser
12 pencil = 4 rulers
4rulers=8 eraser
so 8 erasers are equal to 12 pencils
Answer:
<h2>True,,,. </h2>
it is the graph of a modulus function
Step-by-step explanation:
this may also be checked by vertical line test..
Answer:
The radius of the circle is 6.20 yards
Step-by-step explanation:
In this question, we are asked to calculate the radius of a circle with a circumference of 39 yards.
Mathematically, the circumference of a circle can be calculated using the formula;
C = 2 π r
Hence;
39 = 2 * 22/7 * r
7 * 39 = 2 * 22 * r
273 = 44r
r = 273/44
r = 6.2045 which is 6.20 yards to the nearest hundredth of a yard
