A Baseball Player Is Asked to Swing at Pitches in Sets

question 31

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 hitting a particular number of pitches is given below. Determine the standarddeviation for this discrete 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) 1.05
• B) 1.10
• C) 1.21
• D) 0.28

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Definitions:

Purely Competitive

A market structure characterized by many buyers and sellers, free entry and exit, and a standardized product.

Product Selling

The process of marketing and selling goods or services to customers.

Purely Competitive Conditions

A market scenario where numerous small suppliers offer identical products, resulting in no single supplier having any market control.

Marginal Product

The additional output that is produced by adding one more unit of a particular input while keeping other inputs constant.