You wish to find a 95% confidence interval for the mean number of times men change channels with a remote control during a commercial. based on a preliminary study, you estimate σ = 15. how many commercials' worth of data do you need to have a margin of error no more than 3?

Ben wants to play a carnival game that costs $2. in his pocket he has 5 red tickets worth 35 cents each, and 15 blue tickets worth 10 cents each. which of the following systems of inequalities correctly represents the constraints on the variables in this problem? let represent the red tickets and b represent the blue tickets.

Is it true or false i’m trying to pass this test so i can leave school

Rena is building a 1: 180 scale model of a real castle. her model has a rectangular base that is 3 feet wide and 4 feet long what is the area of the base of the actual castle in square feet