Suppose the experiment is to flip a coin three times and observe the side facing up. Let H represent head and I represenc tail. Represent the outcomes as a string of three letters; for example, TTH represents flipping tail, tail, head. How big is the sample space? Whar is the sample space, S, of this experiment? (Enter the outcomes as a comma separated list; the curly braces are provided.) S={} Let E be the event of flipping only tails. Determine the outcomes in E. (Enter the outcomes as a comma separated list; the curly braces are provided) E={} Let F be the event of flipping ac lease two heads. Determine the outcomes in F. (Enter the outcomes as a comma sepanted list; the curly braces are provided.) F={}