Question 1103166
For the standard deviation, divide by 4 and not 5, and the result is 138.34.
Coefficient of variation is s/xbar or 138.34/200=0.6917
Total of 5 states is 1000.
Total of 26 other states is average*number=1.4*26=36.4
Total of 31 states is 1036.4
Divide by 31 and average for 31 states is 33.43 million barrels.