Find the Critical Value or Values Of $\chi ^ { 2 }$

question 12

Essay

Find the critical value or values of $\chi ^ { 2 }$ based on the given information.
-With individual lines at the checkouts, a store manager finds that the standard deviation for the waiting times
on Monday mornings is 5.7 minutes. After switching to a single waiting line, he finds that for a random sample
of 29 customers, the waiting times have a standard deviation of 4.9 minutes. Use a 0.025 significance level to test
the claim that with a single line, waiting times vary less than with individual lines.

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Definitions:

Business Unionism

A labor union strategy focusing on negotiation of immediate economic benefits for workers, such as wages and job security, over broader social objectives.

21st Century

Refers to the current century, marked by advanced technology, globalization, and evolving workplace dynamics including shifts in labor relations and employment patterns.

Representation Gap

The discrepancy between workers who are members of a labor union and those who are not but would like to be, indicating a lack of union representation.

National Labor Relations Act

A foundational U.S. labor law enacted in 1935 that protects the rights of employees to organize, engage in collective bargaining, and participate in strikes and other union activities.