To find the long-run relative frequency of tails, we first need to determine how many times tails were observed.
If the coin was tossed 300 times and heads were observed 180 times, we can calculate the number of tails as follows:
Number of tails = Total tosses - Number of heads Number of tails = 300 - 180 = 120
Now, we can find the long-run relative frequency of tails by dividing the number of tails by the total number of tosses:
Long-run relative frequency of tails = Number of tails / Total tosses Long-run relative frequency of tails = 120 / 300 = 0.4
Thus, the long-run relative frequency of tails is 0.4.