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Around Halloween each year the grocery store sells three-pound bags of candy con

ID: 3047139 • Letter: A

Question

Around Halloween each year the grocery store sells three-pound bags of candy containing a mixture of three different mini-bars: Snickers, Milky Way, and Twix. If the bag has an equal number of each of the three bars, then what are the probabilities for each of the following? A. Randomly selecting a Milky Way bar B. Randomly selecting either a Snickers or a Twix bar C. Randomly selecting something other than a Twix bar Around Halloween each year the grocery store sells three-pound bags of candy containing a mixture of three different mini-bars: Snickers, Milky Way, and Twix. If the bag has an equal number of each of the three bars, then what are the probabilities for each of the following? A. Randomly selecting a Milky Way bar B. Randomly selecting either a Snickers or a Twix bar C. Randomly selecting something other than a Twix bar A. Randomly selecting a Milky Way bar B. Randomly selecting either a Snickers or a Twix bar C. Randomly selecting something other than a Twix bar

Explanation / Answer

Bag has equal number of each of three bars.
so each bar have 1/3 probability to be picked.

(a) Pr(Seelcting a Milky Way bar) = 1/3

(b) Pr(Selecting either a snickers or a Twisx bar) = 1/3 + 1/3 = 2/3

(c) Pr(Not a twix bar) = 1 - Pr(Selecting twix bar) = 1 - 1/3 = 2/3

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