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3 years ago

14

Which costs more over the course of a year: a medium 3 item pizza, which costs $7.25, four times a week, or going out to a fine

dining restaurant ($85) twice a month?

1 answer:

tiny-mole [99]3 years ago

5 0

Mult. $7.25 by 4 times 4 (4 PIZZAS per week, for 4 weeks):

$7.25(4)(4) = $116

Fine dining: 2($85) = $170

So, the fine dining costs more!

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Answer with Step-by-step explanation:

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Sample space={HH,HT,TH,TT}

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Using the formula

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$P(A\cap C)=\frac{1}{4}$

$P(A)\cdot P(B)=\frac{1}{2}\cdot \frac{1}{2}=\frac{1}{4}$

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$P(A)\cdot P(C)=\frac{1}{4}$

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Therefore, A and B are independent

$P(B)\cdot P(C)=P(B\cap C)$

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Therefore, A and C are independent.

Hence, A, B and C are pairwise independent.

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