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A coin is tossed 7 times. FInd the probability distribution of getting r heads.

A coin is tossed 7 times. FInd the probability distribution of getting r heads.

Grade:Upto college level

1 Answers

SHAIK AASIF AHAMED
askIITians Faculty 74 Points
8 years ago
Hello student,
There are 2^7 = 128 possible outcomes.
Choose r of the 7 outcomes to be heads. Then there are 7Cr outcomes containing r heads, and the probability H(r) that there are r heads is:
H(r) = 7Cr / 128.
Thanks and Regards
Shaik Aasif
askIITians faculty

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