A. 300-200=100
You round 267 to 300, 154 to 200, and 113 to 100.
Answer:
33
Step-by-step explanation:
How they dress, What movie they buy, and what snacks you buy
Answer:
$8040 spent on her car and insurance payments.
Step-by-step explanation:
511 + 159 = 670
670 times 12 = 8040
Answer:
Margin of error of 0.0485 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
.
That is z with a pvalue of
, so Z = 1.96.
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 question:

The margin of error is of:



Margin of error of 0.0485 hours.