Fair coin binomial: probabilities equal to 1/2 by symmetry

1. A.
   $P[X=0] = P[X=5]$
2. B.
   $P[X \leq 1] = P[X \geq 4]$
3. C.
   $P[X \leq 2] = P[X \geq 3]$
4. D.
   $P[X \leq 2] > P[X \geq 3]$

Tap an option to check your answer.

1. A.
   $\frac{1}{8}$
2. B.
   $\frac{3}{8}$
3. C.
   $\frac{1}{2}$
4. D.
   $\frac{3}{4}$

Tap an option to check your answer.

1. A.
   $p(x \le 2) = p(x \ge 3)$
2. B.
   $p(x \le 2) > p(x \ge 3)$
3. C.
   $p(x \le 2) < p(x \ge 3)$
4. D.
   $p(x \le 2) = 2p(x \ge 3)$

Tap an option to check your answer.

1. A.
   $\dfrac{3}{4}$
2. B.
   $\dfrac{1}{6}$
3. C.
   $\dfrac{1}{2}$
4. D.
   $-\dfrac{1}{2}$

Tap an option to check your answer.