For Exercises 9.1 and 9.2, see page 458; for 9.3 and 9.4, see page 461; for 9.5 and 9.6, see page 462; for 9.7 and 9.8, see page 463; for 9.9 and 9.10, see page 465; for 9.11, see page 466; for 9.12 and 9.13, see page 471; for 9.14, see page 473; for 9.15, see page 474; and for 9.16, see page 475.
9.15 Distribution of M&M colors.
M&M Mars Company has varied the mix of colors for M&M'S Plain Chocolate Candies over the years. These changes in color blends are the result of consumer preference tests. Most recently, the color distribution is reported to be 13% brown, 14% yellow, 13% red, 20% orange, 24% blue, and 16% green.7 You open up a 14-ounce bag of M&M'S and find 61 brown, 59 yellow, 49 red, 77 orange, 141 blue, and 88 green. Use a goodness-of-fit test to examine how well this bag fits the percents stated by the M&M Mars Company.
9.15
. The data provide evidence that the bag is different than the percents stated by the M&M Mars Company.
mm