Question

A coin is tossed 100 times and the following outcomes are recorded
Head:45 times Tails:55 times from the experiment
a) Compute the probability of each outcomes.
b) Find the sum of probabilities of all outcomes.

Answer 1

a) probability of heads=45/100
probability of tails=55/100

b) total probability of all outcomes will be equal to 1

Answer 2

Solution :

Head = 45 times ,

Tails = 55 times ,

Number of total possible outcomes = 100

i ) Probability of getting head ( E ):

number of favourable outcomes = 45 --( 2 )

P( E ) = ( 2 )/( 1 )

= 45/100

= 9/20

ii ) probability of getting tail is E .

Number of favourable outcomes = 55--( 3 )

P( E ) = ( 3 )/( 1 )

= 55/100

= 11/20

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