A Baseball Player Is Asked to Swing at Pitches in Sets

question 21

Multiple Choice

A baseball player is asked to swing at pitches in sets of four. The player swings at 100 sets of 4 pitches. Theprobability distribution for making a particular number of hits is given below. Determine the mean for thisdiscrete probability distribution. $$\begin{array} { | c | c | c | c | c | c | } \hline x & 0 & 1 & 2 & 3 & 4 \\\hline P ( x ) & 0.02 & 0.07 & 0.22 & 0.27 & 0.42 \\\hline\end{array}$$

• A) 3
• B) 4
• C) 2
• D) 3.5

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Definitions:

Income Statement

A financial statement that shows a company's revenues and expenses over a specified period, culminating in net income or loss.

Contribution Margin

The amount remaining from sales revenue after variable expenses have been deducted.

Variable Cost

A cost that changes in proportion to the level of activity or volume of production in a business.

Gross Margin

The difference between sales revenue and the cost of goods sold, expressed as a percentage of sales.