Harold tosses a nickel four times.  What is the probability that he gets at least as many heads as tails?
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Harold tosses a nickel four times.  What is the probability that he gets at least as many heads as tails?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
\frac{11}{16}
Harold tosses a nickel four times.  What is the probability that he gets at least as many heads as tails?
train