A woman drives an SUV that gets 13 ​mi/gal (mpg). Her husband drives a hybrid that gets 50 mpg. Every​ week, they travel the same number of miles. They want to improve their combined mpg. They have two options on how they can improve it. Option​ 1: They can tune the SUV and increase its mileage by mpg and keep the hybrid as it is.
Option​ 2: They can buy a new hybrid that gets mpg and keep the SUV as it is.
Which option will give them a better combined​ mpg?

Asample of 200 rom computer chips was selected on each of 30 consecutive days, and the number of nonconforming chips on each day was as follows: the data has been given so that it can be copied into r as a vector. non.conforming = c(10, 15, 21, 19, 34, 16, 5, 24, 8, 21, 32, 14, 14, 19, 18, 20, 12, 23, 10, 19, 20, 18, 13, 26, 33, 14, 12, 21, 12, 27) #construct a p chart by using the following code. you will need to enter your values for pbar, lcl and ucl. pbar = lcl = ucl = plot(non.conforming/200, ylim = c(0,.5)) abline(h = pbar, lty = 2) abline(h = lcl, lty = 3) abline(h = ucl, lty = 3)