A sample of 2,500 people was asked how many cups of coffee they drink in the morning.You are given the following sample information. $$\begin{array} { c c }
\text { Cups of Coffee } & \text { Frequency } \
0 & 700 \
1 & 900 \
2 & 600 \
3 & 300 \
& 2,500
\end{array}$$ The expected number of cups of coffee is?
A) 1
B) 1.2
C) 1.5
D) 1.7

Question

A sample of 2,500 people was asked how many cups of coffee they drink in the morning.You are given the following sample information. $$\begin{array} { c c } 
\text { Cups of Coffee } & \text { Frequency } \
0 & 700 \
1 & 900 \
2 & 600 \
3 & 300 \
& 2,500
\end{array}$$   The expected number of cups of coffee is?
A)  1
B)  1.2
C)  1.5
D)  1.7

Quizplus · Accepted Answer

The expected number of cups of coffee is calculated by multiplying each number of cups by its frequency, summing these products, and then dividing by the total number of people: (0*700 + 1*900 + 2*600 + 3*300) / 2500 = 1.2.

A Sample of 2,500 People Was Asked How Many Cups Cups of Coffee Frequency 07001900260033002,500\begin{array} { c c } \text { Cups of Coffee } & \text { Frequency } \\0 & 700 \\1 & 900 \\2 & 600 \\3 & 300 \\& 2,500\end{array} Cups of Coffee 0123​ Frequency 7009006003002,500​

A Sample of 2,500 People Was Asked How Many Cups $\begin{array} { c c } \text { Cups of Coffee } & \text { Frequency } \\0 & 700 \\1 & 900 \\2 & 600 \\3 & 300 \\& 2,500\end{array}$