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.
Circumference = 2 x pi x r
Circumference = 2 x 3.14 x 3.5m
Circumference = 21.98
Round to 22m
The answer is c. 22m
20 minutes, I believe. I’m not sure please don’t take may word for it. I would most likely need more information.
Answer:
see below
Step-by-step explanation:
the point-slope equation is
y-1 = 3/2 (x+4)