An Olympic archer is able to hit the bull's-eye 80% of the time.Assume each shot is independent of the others.Supply answers for each blank shown below.

If she shoots 15 arrows, the probability that she gets exactly 10 bull's eyes is

[ Select ]

[".1032", ".3518", ".0611", ".1642"]

If she shoots 15 arrows, the probability that she gets 13 or less bull's eyes is

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[".2309", ".9648", ".8329", ".6020"]

If she shoots 15 arrows, the expected number of bull's-eyes is

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["12", "15", "2.4"]

and the standard deviation is

[ Select ]

["1.55", "2.4", "3.46", "1.34"]