Question

Considering the class discussion answer part 1 and part 2

Part 1: You take three coins out of pocket and toss them at the same time. the probability that the three coins will yield two heads and one tails is:

a. 1/8

b. 1/4

c. 1/2

d. 1

e. None of the above

Part 2: Which of the following statements accurately describes the addition rule of probability?

a. The addition rule of probability is used to determine the probability that either one of two independent events will occur

b. the addition rule of probability is used to determine the probability that two or more independent events will occur simultaneously

c. the addition rule of probability is used to determine the probability of producing two or more heterozygous offspring

d. the addition rule of probability is used to determine the probability that a trait is due to two or more meiotic events

e. none of the above.

Answer 1

1. The probability that the three coins will yield two heads and one tails is: 1/4

When we toss 3 coins simultaneously chance is

3 heads

1 head 2 tails

2 heads 1 tail

3 tails

2. The addition rule of probability is used to determine the probability that two or more independent events will occur simultaneously.

For example we throw a dice the chance of getting 1 is 1/6 and chance of getting 2 is 2/6.

The chance of getting both 1 or 2 = 1/6 + 1/6 = 2/3.

In every 2 in 3 times, we throw a dice, we get 1 or 2 in the dice