Deal with the numbers first
GCF of 16, 40 and 68 is 4
there is no GCF of the variables
so required GCF is 4
Answer: We are 95% confident that the population mean time that college students work is between 4.63 and 12.63 hours a week.
Step-by-step explanation:
When ever a percentage confidence interval is constructed, the answers that we have simply implies that we are x% sure ( Where x is the confidence level) that our value for interval is between the ones that we just got.
Going by our question, it implies that we are 95% sure that an average students work between 4.63 and 12.63 hours in a week
I'm guessing you just take the average of the two numbers.
(10.9 + 11.1) / 2
= 11
The answer:
<span>according to the question the length is its width, that means
w=l
</span><span>She wants to enlarge the picture to have an area of 192 in2,
that means Area = </span>wxl = 192 in²
so, since w=l, we can write that Area = wxl =w²=l²= 192 in², this implies:
w=sqrt (192) = 13.85 in
finally the width w = 13.85, and the length l= 13.85 because w=l