In: Math
(1 point) A hockey player is to take 3 shots on a certain
goalie. The probability he will score a goal on his first shot is
0.35. If he scores on his first shot, the chance he will score on
his second shot increases by 0.1; if he misses, the chance that he
scores on his second shot decreases by 0.1. This pattern continues
to on his third shot: If the player scores on his second shot, the
probability he will score on his third shot increases by another
0.1; should he not score on his second shot, the probability of
scoring on the third shot decreases by another
0.1.
A random variable ?X counts the number of goals this hockey player
scores.
(a) Complete the probability distribution of ?X
below. Use four decimals in each of your entries.
?X | 0 | 1 | 2 | 3 |
?(?=?)P(X=x) |
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(b) How many goals would you expect this hockey
player to score? Enter your answer to four decimals.
?(?)=E(X)=
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(c) Compute the standard deviation the random
variable ?X. Enter your answer to two decimals.
??(?)=SD(X)=
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