9.50 M&Ms In Exercise 8.60, you investigated whether Mars, Inc., uses the same proportion of red M&Ms in its plain and peanut varieties. Random sam- ples of plain and peanut M&Ms provide the following sample data for the experiment:

Use a test of hypothesis to determine whether there is a significant difference in the proportions of red candies for the two types of M&Ms. Let a = 0.05 and compare your results with those of Exercise 8.60.

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Plain Peanut Sample size 56 32 Number of red M&Ms 12 8