Answer:
2/7
Step-by-step explanation:
Probability=number of names chosen/total number of names
p=2/7
n has less than 75 copies
sold 12
so add the 12 back
n had less than 87 copies in the beginning of the day
:)

=

To figure it out, cross multiply:
32=21
Since the values are not equal, 2/3 does no equal 7/16
Answer:
5) The midrange is 19.5ºF
6) The midrange is 67.5º
Explanation:
The problem tell us how to calculate the midrange.
In (5) the minimum and maximum values are given (-6ºF and 45ºF, respectively). Using the formula:

In (6), we need to find the minimum and maximum values from a list of them. We can see that the minimum is 58º and the maximum 77º
Then: