Dennis wants to change up his workout today, and he decides to flip a coin to determine his activity. if the coin lands on heads, dennis will do push-ups for one minute. if the coin lands on tails, dennis will do sit-ups for one minute. he flips the coin a total of 30 times, and his results are shown below. flip 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 result h t t h t h h h t t h t h t h flip 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 result t t h t h t t h t t h t t t t what is the probability that a randomly selected minute from dennis' workout would consist of sit-ups?