2.24 Packaging Hamburger Meat The data listed here are the weights (in kilograms) 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 intervalss, 2s, and x 3s.

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 kilogram (kg)? Can you think of any explanation for this?

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1.08 0.99 0.97 1.18 1.41 1.28 0.83 1.06 1.14 1.38 0.75 0.96 1.08 0.87 0.89 0.89 0.96 1.12 1.12 0.93 1.24 0.89 0.98 1.14 0.92 1.18 1.17