The following data show the preference of 20 people for a candidate to a public office. A "+" indicates a preference for the Democratic candidate, and a "-" indicates a preference for the Republican candidate. 
With = 0.05, test for a significant difference in the preference for the candidates.
Definitions:
Company Officers
Executives appointed by the board of directors responsible for managing the day-to-day operations and making major corporate decisions.
Direct Write-Off Method
The method of accounting for uncollectible receivables that recognizes an expense only when an account is determined to be worthless.
Allowance Method
The method of accounting for uncollectible receivables that recognizes an expense by estimating future uncollectible accounts at the end of the accounting period.
Small Companies
Businesses with a comparatively limited scale of operations, resources, or revenues, often defined within specific legal or industry frameworks.
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