Q:

An experiment consists of tossing a penny, a nickel and a dime. Of interest is the side the coin lands on. (a) How many elements are there in the sample space? (b) Let A be the event that there is at least one head and at least one tail. P(A) = Round your answer to two decimal places. (c) Let B be the event that the first and second tosses land on tails. Are the events A and B mutually exclusive? (yes or no)

Accepted Solution

A:
Answer:Part (A) There are 8 elements in the sample space.Part (B) The required probability is [tex]0.75[/tex]Part (C) Yes, the events A and B mutually exclusive.Step-by-step explanation:Consider the provided information.An experiment consists of tossing a penny, a nickel and a dime. Of interest is the side the coin lands on.Part (a) How many elements are there in the sample space?We are interested in the side of the coin lands, a coin has two side, one is head and another is tail.So the sample space of tossing 3 coins is:(H,H,H), (H,H,T), (H,T,H), (T,H,H), (T,T,H), (T,H,T), (H,T,T), (T,T,T)Hence, there are 8 elements in the sample space.Part (b)  Let A be the event that there is at least one head and at least one tail. P(A) = Round your answer to two decimal places.If A is the event that at least one head and at least one tail then the number of possible outcomes are: (H,H,T), (H,T,H), (T,H,H), (T,T,H), (T,H,T), (H,T,T)Therefore the favorable outcomes are 6 and total number of outcomes are 8.Hence. the required probability is [tex]\frac{6}{8} =0.75[/tex]Part (c) Let B be the event that the first and second tosses land on tails. Are the events A and B mutually exclusive? (yes or no)The event is said to be mutually exclusive if P(A∩B)=0 or we can say that there is no common outcomes.Since, event A and B can't happen at the same time, that means it is not possible to obtained 2 tails if the event A occurs.Therefore P(A∩B)=0Hence, the events A and B mutually exclusive.