The december 2011 consumer reports study described in exercise 19 also found that 12 of the 22 "red snapper" packages tested were a different kind of fish.

a. are the conditions for creating a confidence interval satisfied? explain.

b. construct a 95% confidence interval.

c. explain what your confidence interval says about "red snapper" sold in these three states.

Use the information given below, to compare the cost of operating two different vehicles for one month (4 weeks) you are considering two different cars. you drive to work, a 20 mile round trip, five days a week. gasoline costs you $1.50 per gallon car agets 28 miles per gallon, would have $300 a year in maintenance costs, and would cost you $1,500 per year to insure car b gets 19 miles per gallon, would have $500 a year in maintenance costs, and would cost you $1,000 per year to insure costs car a car b gas cost per month insurance cost per month maintenance cost per month $ total cost per month