Question

a fellow classmate tosses 4 coins and finds that 3 of them come up tails. Which of the following is the best conclusion for her to come to?
A. She needs to keep flipping the coins until she gets a 50% in heads to determine if they are fair.
B. The coins are unfair
C. This could easily happen with a fair coin after only 4 flips
D. If she flips the coins one more, they will all come up heads

Answer 1

C. this could easily happen with a fair coin after only 4 flips 

Answer 2

Answer:

Option C -This could easily happen with a fair coin after only 4 flips.

Step-by-step explanation:

Given : A fellow classmate tosses 4 coins and finds that 3 of them come up tails.

To find : Which of the following is the best conclusion for her to come to?        

Solution :

According to statement,

A fellow classmate tosses 4 coins and finds that 3 of them come up tails.

This could be happen when coin is tossed or flip 4 times and the coin must be fair.

As when we flip 4 coins the possible outcomes were

HHHH     THHH      HTHH      TTHH

HHHT      THHT      HTHT      TTHT

HHTH      THTH      HTTH      TTTH

HHTT      THTT       HTTT       TTTT

So, The best conclusion for her is Option C

This could easily happen with a fair coin after only 4 flips.