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Three coins are tossed simultaneously 20...

Three coins are tossed simultaneously 200 times with the following frequencies of different outcomes.
`|{:("Outcome","3 heads","2 heads","1 head","No head"),("Frequency"," 23"," 72"," 77"," 28"):}|`
If the three coins are simultaneously tossed again, compute the probability of 2 heads coming up.

Text Solution

Verified by Experts

In tossing of three coins, getting two heads comes out 72 times.
i.e., m(E) = 72
The total number of tossed three coins `n(S)=23+72+77+28=200`
`therefore` Probability of 2 heads coming up `=(n(E))/(n(S))=(72)/(200)=(9)/(25)`
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