A Baseball Player Is Asked to Swing at Pitches in Sets

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