Question

Suppose we have a really good dart player and in each throw, suppose the probability of hitting the bulls eye is 0.4.

If the player throws 4 darts, what is the expected number of darts that hit the bulls eye?

[Hint: define random variable X_i = 1 if i'th dart hits the bulls eye or not; the random variable of interest is X₁ + X₂ + X₃ + X₄ ]

Group of answer choices

a) 2

b ) 1.5

c) 1.6

d) 1

Answer 1