Petri did the following problem but got the wrong answer. She needs to correct her mistake and turn the problem back in. (5 - 3) 2 ÷ 3 · 7 + 1 25 - 9 ÷ 3 · 7 + 1 25 - 3 · 7 + 1 25 - 21 + 1 4 + 1 5 What correction does Petri need to make? She needs to add before she multiplies. She needs to multiply 3 times 7 before she divides. She needs to change 25 to 10. She needs to subtract 5 - 3 first.

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)