Two coins are tossed simultaneously 500 times. Either one or two heads are obtained 198 times. The probability of getting no head is
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Two coins are tossed simultaneously 500 times with the following frequencies of different outcomes:
Two heads: 95 times
One tail: 290 times
No head: 115 times
Find the probability of occurrence of each of these events.
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Answer
Correct option is
A
0.19, 0.58, 0.23
Given
Totalnumberoftimes2coinsaretossed=500
Nooftimes2Headscomesup=95
Nooftimes1Tailcomesup=290
NooftimesNoHeadcomesup=115
Probabilityof2Headscomingup=
Totalnumberoftimes2coinsaretossed
Frequencyof2Headscomingup
=
500
95
=0.19
Probabilityof1Tailcomingup=
Totalnumberoftimes2coinsaretossed
Frequencyof1Tailcomingup
=
500
290
=0.58
ProbabilityofNoHeadscomingup=
Totalnumberoftimes2coinsaretossed
FrequencyofNoHeadscomingup
=
500
115
=0.23
Answer:
198 / 500= 99/250
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