The following

The following data represents the number of cases of coffee or filters sold by four sales reps in a recent sales competition.

Sales Person	Gourmet	Single Cup	Filters	Total
Connor	142	325	30	497
Paige	42	125	40	207
Bryce	9	100	10	119
Mallory	71	75	40	186
Total	264	625	120	1009

What is the probability that a randomly selected case was sold by Mallory or was single cup? (enter your answer as a decimal rounded to the nearest hundreths)

Correct answer:

p =  0.73

Step-by-step explanation:

$$\begin{gathered} n=1009 \\ {p}_1=\frac{186}{n}=\frac{186}{1009}=\frac{186}{1009}\doteq 0.1843 \\ {p}_2=\frac{625}{n}=\frac{625}{1009}=\frac{625}{1009}\doteq 0.6194 \\ {p}_3=\frac{75}{n}=\frac{75}{1009}=\frac{75}{1009}\doteq 0.0743 \\ p=p_1+p_2-p_3=p_1+p_2-\frac{75}{1009}=0.1843+0.6194-0.0743=\frac{736}{1009}=0.73 \end{gathered}$$

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