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An unbiased coin is tossed 20 times. In ...

An unbiased coin is tossed 20 times. In this experiment , 11 heads and 9 tails were received. Calculate the probability of receiving head and the probability of receiving tail on the basis of the experiment .

Text Solution

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The correct Answer is:
head = 0.55, tail 0.45
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Knowledge Check

  • A coin is tossed 2n times. During the toss any person can't get head and tail with equal numbers. Its probability is ........

    A
    `((2n)!)/((n!)^(2))((1)/(2))^(2n)`
    B
    `1-((2n)!)/((n!)^(2))`
    C
    `1-((2n)!)/((n!)^(2))(1)/(4^(n))`
    D
    None of these

  • When an unbiased coin is tossed thrice , the probability of receiving three heads is .......

    A
    `1/8`
    B
    `1/4`
    C
    `1/2`
    D
    `3/8`

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