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.
I’m going to show you the answer
Answer:
b. 8
Step-by-step explanation:
Answer:
If the whole box is the sports store then its just 80m if its just the equipment section then its 56m
Step-by-step explanation:
8x10=80
80-(6x4)=56 80-24=56
The equation represents two equivalent expressions [ similar sides ]
Hope this helps!