The Table Below Shows the Mean Number of Daily Errors

question 27

Multiple Choice

The table below shows the mean number of daily errors by air traffic controller trainees during the first two weeks on the job.We want to perform a paired t-test at α = .05 to see if the mean daily errors decreased significantly. The test statistic is

• A)1.25
• B)1.75
• C)0.87
• D)0.79

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Definitions:

Acid-test Ratio

A stringent test that measures the liquidity of a company by comparing its most liquid assets (excluding inventory) against its short-term liabilities.

Receivable Turnover

A financial ratio that measures how efficiently a company collects on outstanding accounts receivable during a particular period.

Inventory Turnover

A financial ratio indicating how many times a company has sold and replaced inventory over a period.

Current Ratio

It's a measure of a corporation's capability to meet its immediate financial obligations using its current assets.