Chapter 9.1, Problem 29E

To determine

To find: The appropriate hypotheses for the provided test.

Answer to Problem 29E

Explanation of Solution

Given:

The mean time for a particular maze is 18 seconds.

Calculation:

Hypothesis is conducted for the population parameter not the sample statistics. The correct null and alternative hypotheses could be written as:

  $\begin{array}{l}{H}_0:\mu =18\\ H_a:\mu <18\end{array}$

Here, test is left tailed because to complete the maze faster, the time has to be decreased.