A single coin is tossed 300 times Heads were observes 180 times what is the long run relative frequency of tails

In the long run, the relative frequency of tails can be calculated as follows:

Total number of tosses = 300
Number of times heads were observed = 180
Number of times tails were observed = Total tosses - Heads observed = 300 - 180 = 120

So, the relative frequency of tails in the long run can be calculated as:
Relative frequency of tails = Number of tails observed / Total number of tosses = 120 / 300 = 0.4

Therefore, in the long run, the relative frequency of tails is 0.4 or 40%.