Chapter 9.1, Problem 1E

To determine

The point estimate for the true difference between the population means.

Answer to Problem 1E

Solution:

The value of the point estimate is 3.

Explanation of Solution

Formula used:

The point estimate for the difference between the population means is given by:

${\overline{x}}_1\text{-}{\overline{x}}_2$

Where,

${\overline{x}}_1\text{ and }{\overline{x}}_2\text{ are two sample means}\text{.}$

Given Information:

${\overline{x}}_1=14\text{ and }{\overline{x}}_2=11$.

Calculation:

Substitute ${\overline{x}}_1=14\text{ and }{\overline{x}}_2=11$ in the formula mentioned above,

$\begin{array}{rll}{\overline{x}}_1\text{-}{\overline{x}}_2& =& 14-11\\ & =& 3\end{array}$$$