Question

Based on their analysis of the penalty kicks, the authors of the paper gave the following...

Based on their analysis of the penalty kicks, the authors of the paper gave the following probability estimates.
P(L) = 0.493
P(B|L) = 0.142
P(C) = 0.093
P(B|C) = 0.333
P(R) = 0.414
P(B|R) = 0.126
(a)
For each of the given probabilities, choose a sentence giving an interpretation of the probability in the context of this problem.
P(L) = 0.493
The probability that the goalkeeper stays in the center.
The probability that the goalkeeper blocks the shot.
The probability that the goalkeeper jumps to the left.
The probability that the kicker scores the shot.
The probability that the goalkeeper jumps to the right.
P(C) = 0.093
The probability that the goalkeeper stays in the center.
The probability that the goalkeeper blocks the shot.
The probability that the goalkeeper jumps to the left.
The probability that the kicker scores the shot.
The probability that the goalkeeper jumps to the right.
P(R) = 0.414
The probability that the goalkeeper stays in the center.
The probability that the goalkeeper blocks the shot.
The probability that the goalkeeper jumps to the left.
The probability that the kicker scores the shot.
The probability that the goalkeeper jumps to the right.
P(B|L) = 0.142
The probability that, given that the kick was blocked, the goalkeeper stays center.
The probability that, given that the goalkeeper jumps to the right, the kick was blocked.
The probability that, given that the goalkeeper jumps to the left, the kick was blocked.
The probability that, given that the goalkeeper jumps to the right, the kick was not blocked.
The probability that, given that the goalkeeper stays in the center, the kick was blocked.
P(B|C) = 0.333
The probability that, given that the kick was blocked, the goalkeeper stays center.
The probability that, given that the goalkeeper jumps to the right, the kick was blocked.
The probability that, given that the goalkeeper jumps to the left, the kick was blocked.
The probability that, given that the goalkeeper jumps to the right, the kick was not blocked.
The probability that, given that the goalkeeper stays in the center, the kick was blocked.
P(B|R) = 0.126
The probability that, given that the kick was blocked, the goalkeeper stays center.
The probability that, given that the goalkeeper jumps to the right, the kick was blocked.
The probability that, given that the goalkeeper jumps to the left, the kick was blocked.
The probability that, given that the goalkeeper jumps to the right, the kick was not blocked.
The probability that, given that the goalkeeper stays in the center, the kick was blocked.
(b)
Use the given probabilities to construct a hypothetical 1,000 table with columns corresponding to whether or not a penalty kick was blocked and rows corresponding to whether the goalkeeper jumped left, stayed in the center, or jumped right. (Round your answers to the nearest integer.)
Blocked (B) Not Blocked (not B) Total
Goalkeeper jumped left (L)
Goalkeeper stayed center (C)
Goalkeeper jumped right (R)
Total 1,000
(c)
Use the table to calculate the probability that a penalty kick is blocked.

Homework Answers

Answer #1

P(L) = 0.493 The probability that the goalkeeper jumps to the left.

P(C) = 0.093 The probability that the goalkeeper stays in the center.

P(R) = 0.414 The probability that the goalkeeper jumps to the right.

P(B|L) = 0.142 The probability that, given that the goalkeeper jumps to the left, the kick was blocked.

P(B|C) = 0.333 The probability that, given that the goalkeeper stays in the center, the kick was blocked

P(B|R) = 0.126 The probability that, given that the goalkeeper jumps to the right, the kick was blocked.

Blocked

Not blocked total
Goalkeeper jumped left

70

423 493
Goalkeeper stayed center

31

62 93
Goalkeeper jumped right

52

362 414
total

153

847 1000

P(penalty kick is blocked)=153/1000=0.153

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