Test Hypotheses Regarding the Difference of Two Independent Means
-A $\alpha = 0.05$

question 117

Short Answer

Test Hypotheses Regarding the Difference of Two Independent Means
-A university wanted to see whether there was a significant difference in age between its day staff and evening staff. A random sample of 35 staff members is selected from each group. The data are given below. Test the hypothesis that there is no difference in age between the two groups. Use $\alpha = 0.05$ .
$\text { Day Staff }$
$\begin{array}{llllllllllll}22 & 24 & 24 & 23 & 19 & 19 & 23 & 22 & 18 & 21 & 21 & 18 \\18 & 25 & 29 & 24 & 23 & 22 & 22 & 21 & 20 & 20 & 20 & 27 \\17 & 19 & 18 & 21 & 20 & 23 & 26 & 30 & 25 & 21 & 25 &\end{array}$


Evening Staff
$\begin{array} { l l l l l l l l l l l l } 18 & 23 & 25 & 23 & 21 & 21 & 23 & 24 & 27 & 31 & 24 & 20 \\ 20 & 23 & 19 & 25 & 24 & 27 & 23 & 20 & 20 & 21 & 25 & 24 \\ 23 & 28 & 20 & 19 & 23 & 24 & 20 & 27 & 21 & 29 & 30 & \end{array}$

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Definitions:

Grievance Process

A formalized procedure for employees to file complaints or concerns regarding workplace issues, aiming for a resolution.

Industrial Relations

The study and practice of managing the relationships between employers, employees, and trade unions.

Worker Centers

Community-based and advocacy-focused organizations that provide support to workers who are often in low-wage jobs and not represented by a union.

Labor Markets

Economic markets where labor is traded, characterized by the demand and supply of labor force.