Ten ounces of a liquid contain 20% alcohol and 80% water. It is diluted by adding 40 ounces of water.
The percent of alcohol in the new solution is
(A) 20%
(B) 2%
(C) 40%
(D) 4%
(E) 10%

A)20% because we added water not alcohol

the correct answer is b) histograms can be used to exhibit the shape of distributions. this is because histograms count the frequency of each possible answer, so one is able to see which results are more common and which are less common.