probabilitySolution1 a There ar 222 8 elements b There are

Solution

1.

a)

There ar 2*2*2 = 8 elements.

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b)

There are 3 possibilities that you get 2 heads, namely HHT, HTH, THH. Thus,

P(2 heads) = 3/8 or 0.375 [ANSWER]

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c)

P(not 2 heads) = 1 - P(2 heads) = 1 - 3/8 = 0.625 [ANSWER]

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d)

There are 4 results having more heads than tails, namely HHT, HTH, THH, HHH.

P(more heads) = 4/8 = 0.5 [ANSWER]

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e)

Odds (2 heads) = P(2 heads) / P(not 2 heads) = (0.375)/(0.625) = 3:5 [ANSWER]

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