GO Electrical
0 votes

A person decides to toss a fair coin repeatedly until he gets a head. He will make at most $3$ tosses. Let the random variable $Y$ denote the number of heads. The value of $\text{var} \{Y\}$, where $\text{var} \{ \cdot \}$ denotes the variance, equals

  1. $\frac{7}{8} \\$
  2. $\frac{49}{64} \\$
  3. $\frac{7}{64} \\$
  4. $\frac{105}{64}$
in new by (5.4k points)
edited by

Please log in or register to answer this question.

Answer:
Welcome to GATE Overflow, Electrical, where you can ask questions and receive answers from other members of the community.

847 questions
37 answers
10 comments
26,092 users