Suppose you buy a new car whose advertised mileage is 20 miles per gallon (mpg). after driving your car for several months, you find that its mileage is 15.7 mpg. you telephone the manufacturer and learn that the standard deviation of gas mileages for all cars of the model you bought is 1.26 mpg. find the z-score for the gas mileage of your car.

Step-by-step explanation:

To determine the Z - score, it is calculated as follows:

Then:

It means that there are more than 3 standar deviations below the advertised mileage.

22

step-by-step explanation:

we'll this would mean that the dunk tank and the bounce house are the same for 20 hours because the 2 represents that the two activities, and the 20 represents the amount of hours they both are. so with this said, it means that the answer is c. the costs for a dunk tank and bounce house are the same for 20 hours.

c.the costs for a dunk tank and bounce house are the same for 20 hours.

hope this .