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:

Operating Activities

Activities directly related to the business's primary operations, such as manufacturing, distributing, marketing, and selling a product or service.

Gain

The profit realized from the sale of assets or investments when the selling price exceeds the purchase price.

Indirect Method

A way of reporting cash flows from operating activities that begins with net income and adjusts for changes in balance sheet accounts to calculate cash provided by operations.

Noncash Investing

Investment activities that do not involve immediate cash transactions, such as acquiring assets through exchange or issuing stock for assets.