A Random Sample of 85 Group Leaders, Supervisors, and Similar

question 92

Multiple Choice

A random sample of 85 group leaders, supervisors, and similar personnel revealed that on the
Average a person spent 6.5 years on the job before being promoted. The standard deviation of the
Sample was 1.7 years. What is the 95% confidence interval for the true population mean?

• A) 6.46 and 6.54
• B) 3.17 and 9.83
• C) 6.13 and 6.87
• D) 6.20 and 6.70
• E) 6.32 and 6.88

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Definitions:

Conditions Precedent

Specific conditions that must be met before a contract becomes effective or before an obligation to perform is triggered.

De Jure

According to rightful entitlement or claim; by right of law, often distinguishing legal authority or legitimacy from de facto (or actual) power or control.

De Facto

A term used to describe practices that exist in reality, even though they are not officially recognized by laws.

Promissory Notes

Written, legally binding agreements in which one party promises to pay another a specified sum of money at a future date or on demand.