Question

At a baseball card collector conference, the conference organizer kept records of how many baseball cards each person brought with them, as well as the year in which they started collecting baseball cards. The results are shown in the table below. | | One | Two | Three | Four or more | | :--- | :--- | :--- | :--- | :--- | | 2002 | 18 | 18 | 14 | 15 | | 2003 | 8 | 15 | 5 | 14 | | 2004 | 14 | 8 | 19 | 18 | | 2005 | 10 | 22 | 9 | 18 | | 2006 | 13 | 16 | 14 | 11 | If a baseball card collector at the conference is selected at random, compute each of the following probabilities. All answers should be exact. (Hint: You may want to find the totals of each row and column first.) (a) The collector had exactly one card with them. (b) The collector started collecting cards in 2004. (c) The collector had fewer than three cards with them. (d) The collector started collecting cards after 2004. (e) The collector started collecting cards in 2004 or had exactly two cards with them. (f) The collector started collecting cards in 2002 or had exactly one card with them. (g) The collector did not start collecting cards in 2005 and had four or more cards with them. (h) The collector started collecting cards in 2005 and had at least three cards with them.

          At a baseball card collector conference, the conference organizer kept records of how many baseball cards each person brought with them, as well as the year in which they started collecting baseball cards. The results are shown in the table below.

| | One | Two | Three | Four or more |
| :--- | :--- | :--- | :--- | :--- |
| 2002 | 18 | 18 | 14 | 15 |
| 2003 | 8 | 15 | 5 | 14 |
| 2004 | 14 | 8 | 19 | 18 |
| 2005 | 10 | 22 | 9 | 18 |
| 2006 | 13 | 16 | 14 | 11 |

If a baseball card collector at the conference is selected at random, compute each of the following probabilities. All answers should be exact. (Hint: You may want to find the totals of each row and column first.)

(a) The collector had exactly one card with them.
(b) The collector started collecting cards in 2004.
(c) The collector had fewer than three cards with them.
(d) The collector started collecting cards after 2004.
(e) The collector started collecting cards in 2004 or had exactly two cards with them.
(f) The collector started collecting cards in 2002 or had exactly one card with them.
(g) The collector did not start collecting cards in 2005 and had four or more cards with them.
(h) The collector started collecting cards in 2005 and had at least three cards with them.

At a baseball card collector conference, the conference organizer kept records of how many baseball cards each person brought with them, as well as the year in which they started collecting baseball cards. The results are shown in the table below.

| | One | Two | Three | Four or more |
| :— | :— | :— | :— | :— |
| 2002 | 18 | 18 | 14 | 15 |
| 2003 | 8 | 15 | 5 | 14 |
| 2004 | 14 | 8 | 19 | 18 |
| 2005 | 10 | 22 | 9 | 18 |
| 2006 | 13 | 16 | 14 | 11 |

If a baseball card collector at the conference is selected at random, compute each of the following probabilities. All answers should be exact. (Hint: You may want to find the totals of each row and column first.)

(a) The collector had exactly one card with them.
(b) The collector started collecting cards in 2004.
(c) The collector had fewer than three cards with them.
(d) The collector started collecting cards after 2004.
(e) The collector started collecting cards in 2004 or had exactly two cards with them.
(f) The collector started collecting cards in 2002 or had exactly one card with them.
(g) The collector did not start collecting cards in 2005 and had four or more cards with them.
(h) The collector started collecting cards in 2005 and had at least three cards with them.

Added by Rocio M.

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