Question

A sample of 26 customers was taken at a computer store. Each customer was asked the price of the computer she bought. Here is a summary Number of computers 7, 10,9 Price paid for each (in dollars) 900, 800, 1200 Find the mean price for this sample. Round your answer to the nearest dollar.

Answer 1

formula for the mean

`\bar{x}=(\sum ^(\infty)_(n\mathop=0)x_i)/(n)`

for this exercise n=26

replace data on the formula

`\begin{gathered} \bar{x}=((7\cdot900)+(10\cdot800)+(9\cdot1200))/(26) \\ \bar{x}=965.385 \end{gathered}`