the population standard deviation fro a gas mileage for a certain model of car is known to be 1.8 mi
Do you need academic writing help with your homework? Let us write your papers.
Order a Similar Paper
Order a Different Paper
the population standard deviation fro a gas mileage for a certain model of car is known to be 1.8 miles per gallon. how many cars would you have to test(what sample would you need)to get a margin of error of 0.5 mile per gallon (or less) for the population mean at a 90%confidence level?