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March 31, 2015

March 31, 2015

Posted by **Anonymous** on Thursday, January 12, 2012 at 10:06pm.

a. Construct a percentage histogram.

b. Is the steel mill doing a good job in meeting the requirements set by the automobile company? Explain.

- statistic -
**Stat**, Thursday, January 12, 2012 at 10:08pmnevermind above question, this question please:

Suppose there are three balls in a box. On one of the balls is the number 1, on another is the

number 2, and on the third is the number 3. You select two balls at random and without

replacement from the box and note the two numbers observed. The sample space S consists of

the three equally likely outcomes {(1, 2), (1, 3), (2, 3)}. Let X be the sum of the numbers on the

two balls selected.

Referring to the information above, the variance of X is... (EXPLAIN)

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