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Answer:
Mean = 0.48
Step-by-step explanation:
Given that according to the Masterfoods, we have M&M manufactures different colours of peanuts.
Colour Brown Yellow Red Blue Orange Green Total
Percent 12 15 12 23 23 15 100
We can sort this as brown 12% and non brown 88%
X no of brown in the selection of 4 peanuts is binomial since there are two outcomes and each is independent.
P(X=r) = 4Cr (0.12)^r (0.88)^(n-r)
E(x) = np =