<span>The Jonestown will be much colder compare to the
Cooperville.
See how the solution goes:
At 1:00, the both share the same temperature
Let X = the temperature of both town
Jonestown
=> 1:00 = x
=> 2:00 = x – 10
=> 3:00 = x – 10 – 8
At 3:00, Jonestown dropped a total of 18 degrees
Cooperville
=> 1:00 = x
=> 2:00 = x – 6
=> 3:00 = x – 6 – 2
At 3:00, Cooperville dropped 8 degrees only.</span>
Answer:
C.25
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.
Which of the following is the smallest sample the company can take to achieve the desired margin or error?
This is n when 






We have to round up.
So the correct answer is:
C.25
1/3 from 6 (the amount of girls with glasses) / 18 (total number of students)
Answer:
1
Step-by-step explanation:
hope this helps, have a great day :)