Two coins are tossed 1000 times and the outcomes are recorded as under:
Number of heads | 2 | 1 | 0 |
Frequency | 266 | 540 | 194 |
A coin is thrown at random. What is the probability of getting at most one head?
Total number times a coin is tossed = 1000
Number of times no heads occurred = 194
Number of times one head occurred = 540
Number of times two head occurred = 266
Probability P() = 
Probability of getting at most one head is
P(at most one head) = 
= 
= 
= 
12