Question:
A coin is tossed 500 times and we get
head: 285 times, tail: 215 times.
When a coin is tossed at random, what is the probability of getting
(i) a head?
(ii) a tail?
Solution:
Total number of tosses = 500
Number of heads = 285
Number of tails = 215
(i) Let E be the event of getting a head.
$P($ getting a head $)=P(E)=\frac{\text { Number of heads coming up }}{\text { Total number of trials }}=\frac{285}{500}=0.57$
(ii) Let F be the event of getting a tail.
$P$ (getting a tail) $=P(F)=\frac{\text { Number of tails coming up }}{\text { Total number of trials }}=\frac{215}{500}=0.43$
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