Question

(URGENT) The probability distribution of a 3-coin toss is shown in the table.

What is the probability that the number of heads will be odd?


A 1/4

B 1/8

C 1/2

D 3/8

Answer 1

Answer: C) 1/2

We're looking for the probabilities of getting 1 head or 3 heads, which have the probability values of 3/8 and 1/8 respectively

Add those probabilities: 3/8 + 1/8 = (3+1)/8 = 4/8 = 1/2

Answer 2

C 1/2

Explanation:

P (heads is odd)

P (heads is 1 or 3) When it is an or, we add the probabilities

P (heads is 1) + P (heads is 3)

3/8 + 1/8

4/8

1/2