3 years ago

Does anyone know the answer?

Mathematics

2 answers:

GREYUIT [131]3 years ago

8 0

Answer:

Step-by-step explanation:

Softa [21]3 years ago

4 0

Answer:

It's E l did that before

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SOVA2 [1]

Answer:0.565

Step-by-step explanation:

Hat contain 100 coins out of which 99 is fair and one is double headed.

Probability of getting 7 heads is sum of Head through fair coin+heads through biased coin

Probability of getting a head through a fair coin=0.5

$P(7 heads)=0.99\times 0.5^7+0.01\times 1$

$P(Double head |7 heads )=\frac{Probability\ of\ 7\ heads\ and\ double\ headed}{probability\ of\ 7\ heads}$

$P(Double head |7 heads )=\frac{0.01\times 1}{0.99\times 0.5^7+0.01\times 1}$

$=\frac{0.01}{0.99\times 0.0078+0.01}=0.565$

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A. True if im wrong sorry hope this helped tho :p

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