Question 1157419
Assuming a probability (experimental) or 0.45 for heads and 0.55 or tails
This would be 0.45*0.55*0.55*0.45=0.0613

Not stated, but relevant, is the background toss is quite likely to give 9/11 even for a fair coin. The probability of 1/2 for 4 tosses is 1/16 or 0.0625.  

The answer to the question asked is not very likely with those probabilities.