A single coin is tossed 500 times. Heads was observed 150 times. What is the long-run relative frequency of tails?

Express the answer in decimal form.

To find the long-run relative frequency of tails, we need to subtract the observed frequency of heads from the total number of tosses and then divide it by the total number of tosses.

Total number of tosses = 500
Observed frequency of heads = 150

Frequency of tails = 500 - 150 = 350

Long-run relative frequency of tails = Frequency of tails / Total number of tosses
= 350 / 500
= 0.7

Therefore, the long-run relative frequency of tails is 0.7.