Three coins are tossed simultaneously 200 times with the following frequencies of different outcomes:
Outcome 3 Head 2 Head 1 Head No Head Frequency 23 72 77 28
Three coins are tossed simultaneously, compute the probability of - 2 Heads coming up
- 1 Head coming up
Answer :
We have :
We know probability p ( E ) =
Here Total number of events n ( S ) = 23 + 72 + 77 + 28 = 200
And
1 ) Number of desired event , when 2 heads coming up n ( E ) = 72
So,
Probability of getting two heads = ( Ans )
2 ) Number of desired event , when 1 head coming up n ( E ) = 77
So,
Probability of getting one head = ( Ans )
We have :
Outcome | 3 Heads | 2 Heads | 1 Heads | No Heads |
Frequency | 23 | 72 | 77 | 28 |
We know probability p ( E ) =
Here Total number of events n ( S ) = 23 + 72 + 77 + 28 = 200
And
1 ) Number of desired event , when 2 heads coming up n ( E ) = 72
So,
Probability of getting two heads = ( Ans )
2 ) Number of desired event , when 1 head coming up n ( E ) = 77
So,
Probability of getting one head = ( Ans )