Hamburger Meat The weights (in pounds) of the 27 packages of ground beef from Exerci...

Hamburger Meat The weights (in pounds) of the 27 packages of ground beef from Exercise 2.24 (see data set EX0224) are listed here in order from smallest to largest:

a. Confirm the values of the mean and standard deviation, calculated in Exercise 2.24 as ̅x = 1.05 and s = .17.

b. The two largest packages of meat weigh 1.38 and 1.41 pounds. Are these two packages unusually heavy? Explain.

c. Construct a box plot for the package weights. What does the position of the median line and the length of the whiskers tell you about the shape of the distribution?

Reference:

Packaging Hamburger Meat The data listed here are the weights (in pounds) of 27 packages of ground beef in a supermarket meat display:

a. Construct a stem and leaf plot or a relative frequency histogram to display the distribution of weights. Is the distribution relatively mound shaped?

b. Find the mean and standard deviation of the data set.

c. Find the percentage of measurements in the intervals .

d. How do the percentages obtained in part c compare with those given by the Empirical Rule? Explain.

e. How many of the packages weigh exactly 1 pound? Can you think of any explanation for this?