Question

A manufacturer of breakfast cereals packs the cereal in 15-ounce boxes. Periodic quality checks are made to ensure that the boxes are filled adequately. A random sample of 35 boxes of the cereal is selected and their weights (in ounces) are recorded:

14.91               15.23               15.34               15.40               15.48               15.59               15.62

14.96               15.24               15.34               15.42               15.49               15.60               15.62

15.11               15.28               15.36               15.45               15.50               15.60               15.63

15.21               15.50               15.38               15.46               15.52               15.61               15.64

15.22               15.30               15.39               15.48               15.58               15.61               15.67

(a) Do you think the distribution for the weights of the cereal boxes is symmetric or skewed? If it is skewed, which way is it skewed?

(b) Use one of the graphical methods in Chapter learned to display the data. Does the display agree with your answer to part (a)? If not, why not?

Answer 1