Answer:
a) 
b) The should sample at least 293 small claims.
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
, which means that the answer of question a is z = 1.645.
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.
(b) If the group wants their estimate to have a maximum error of $12, how many small claims should they sample?
They should sample at least n small claims, in which n is found when
. So







The should sample at least 293 small claims.
Answer:15
Step-by-step explanation:
Answer:
238 cubic meters
Step-by-step explanation:
Multiply all the sides.
(4) x (7) x (8 1/2) = 238 cubic meters
Jamie has 40 books.
I’ve had this question back when i was in school. Sorry for not explaining my work, in a bit of a hurry.
Hope this helps & good luck. :)
Answer:
it's C
Step-by-step explanation: