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A Coin is Tossed 5 Times. If X is the Number of Heads Observed, Find the Probability Distribution of X. - Mathematics

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प्रश्न

A coin is tossed 5 times. If X is the number of heads observed, find the probability distribution of X.

 
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उत्तर

Let X = number of heads in 5 tosses. Then the binomial distribution for X has n =5,

\[p = \frac{1}{2} \text{ and } q = \frac{1}{2}\] 
\[P(X = r) = ^{5}{}{C}_r \left( \frac{1}{2} \right)^r \left( \frac{1}{2} \right)^{5 - r} , r = 0, 1, 2, 3, 4, 5\]
\[ = \frac{^{5}{}{C}_r}{2^5}\]
\[\text{ Substituting r = 0, 1, 2, 3, 4, 5 we get the following probability disrtribution }  . \]
   X       0   1    2     3     4   5
\[P(X) \frac{1}{32} \frac{5}{32} \frac{10}{32} \frac{10}{32} \frac{5}{32} \frac{1}{32}\]
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पाठ 33: Binomial Distribution - Exercise 33.1 [पृष्ठ १३]

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आरडी शर्मा Mathematics [English] Class 12
पाठ 33 Binomial Distribution
Exercise 33.1 | Q 24 | पृष्ठ १३
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