(a) I have the line plot attached
(b) Purple mean: 30
Red mean: 36
Purple median: 30
Red median: 36
I'm sorry, that is as much as I can help with, I really am sorry.
First, you divide 18 by 3. When you have the quotient, you recall that the two original numbers had opposite signs, and so you label the answer negative.
The standard deviation is a measure that is used to quantify the amount of variation or dispersion of a set of data values from the mean.
A low standard deviation indicates that the data points tend to be close to the mean of the set, while a high standard
deviation indicates that the data points are spread out over a wider
range of values.
Therefore, the <span>measure of variation that is preferred when the mean is used as a measure of center is standard deviation.</span>
A.) If there are no restrictions, Number of committes possible = 9C5 = 126
b.) If both Jim and Mary must be in the committee, then we are now choosing 3 persons from the remaining 7 people. So the number of committes possible = 7C3 = 35
c.) If either Jim or Mary (but not both) must be on the committe, then there are 7 people availabe and 4 choices to make after taking either Jim or Mary. Also, there are 2 possible ways of choosing either Jim or May.
Theefore, Number of committe possible = 2(7C4) = 2(35) = 70
