Carbohydrates in Yogurt: The number of carbo- hydrates (in grams) per 8-ounce serving of yogurt
for each of a random selection of brands is listed
below. Estimate the true population variance and
standard deviation for the number of carbohydrates
per 8-ounce serving of yogurt with 95% confidence.
Assume the variable is normally distributed.

17 42 41 20 39 41 35 15 43
25 38 33 42 23 17 25 34

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)