Answer: you start with a -13 right? well then you add a positive 20 which will then equal to 7 if you were adding a -20 then you get -33
Step-by-step explanation:
Answer:
1.165.
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 problem, we have that:
. So
So the correct answer is:
1.165.
8 . You round 31.9 to 32 then divide it by 4 which gives you 8
Answer:
your new balance is $689.
Step-by-step explanation:
1.) subtract 49 from 751, then subtract 36 from that amount then 125 from that amount.(your balance at this point should be 541.)
2.) add 148 to 541 which should make you nee balance be 689
