Question

A coin is tossed 100 times with the following frequencies Head – 45, Tail – 55 Then the probability of getting a head

Answer 1

Answer:

45 / 100 or 9 / 20 or 0.45

Step-by-step explanation:

Total Outcomes = 100

Favourable Outcomes = 45 { as probability of head to be found }

So,

P (getting head) = Favourable Outcome / Total Outcome = 45 / 100

or 9 / 20 or 0.45.

IMPORTANT POINTS ABOUT PROBABILITY :

1. Probability of any event is never more than 1.

2. P(E) + P(not E) = 1.

3. P(E) = Probability of happening of an event.

4. P (not E) = Probability of not happening of an event.

5. Equally likely outcomes are the outcomes which have equal chances of occuring.

6. Elementary Outcomes are the outcomes which only has one event of an experiment.

7. RANGE OF PROBABILITY : 0 < or equal to P(E) < or equal to 1.