A) \[1/2\]
B) \[3/8\]
C) \[5/8\]
D) \[3/4\]
Correct Answer: B
Solution :
\[n=3,\,\,P\](success)\[=P(HT\,\,or\,\,TH)=1/2\] \[\Rightarrow \]\[p=q=\frac{1}{2}\]and\[r=2\] \[P(r=2){{=}^{3}}{{C}_{2}}{{\left( \frac{1}{2} \right)}^{2}}\cdot \frac{1}{2}=\frac{3}{8}\]You need to login to perform this action.
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