Q 8.7 - Elementary Statistics

Question

A simple randoes sample is taken from a population and yields the following data for a variable of the population:

Find a point estimatate for the population mean.(i.e, the mean of the variable)

Step-by-Step Solution

Answer

The point estimatate for the population mean is 23 

Step 1:Given information

Step 2:Simplification

The mean of the variable is

$$\begin{gathered} \overline{x}=\frac{\sum x_i}{n} \\ =\frac{9+32+37+32+20+24+10+15+21+30}{10} \\ =\frac{230}{10} \\ =23 \end{gathered}$$

Therefore,the point estimatate for the population mean is 23