mr Leahy buys a 1/2 chocolate ,1/2 vanilla cake for $20. mrs Leahy values chocolate 4 times as much as vanilla. how much is the chocolate half worth to mrs Leahy ?

The accompanying data represent the miles per gallon of a random sample of cars with a three-cylinder, 1.0 liter engine. (a) compute the z-score corresponding to the individual who obtained 42.342.3 miles per gallon. interpret this result.