Select the correct/best answer from the following: 1. For two events, probabilit

Question

Select the correct/best answer from the following:

1. For two events, probability of occurrence of both events at same time or occurrence in series is classified as

a. joint probability

b. dependent probability

c. series probability

d. conditional probability

Could someone explain the difference between conditional probability and joint probability? I think the answer is conditional probability, but it seems like joint probability also makes sense.

2. Sample space for experiment in which two coins are tossed is

a. 8

b. 4

c. 2

d. 10

I believe the answer is 2^2 = 4 possible outcomes meaning the sample space would be 4, but I'm not 100% sure.

Explanation / Answer

1. For two events, probability of occurrence of both events at same time or occurrence in series is classified as

Joint probability.

Conditional probability is different. It is a probability where the outcome of one depends on the other (but not necessarily at the same time or both ways.)

2. Since there are two coins tossed, the outcomes are:

HH, TT, TH, HT.

The answer is b.4.

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