A Sample of 500 Evening Students Revealed That Their Annual

question 118

Multiple Choice

A sample of 500 evening students revealed that their annual incomes from employment in industry during the day were normally distributed with a mean income of $30,000 and a standard deviation of $3,000. (i) 250 students earned more than $30,000.
(ii. 314 students earned between $27,000 and $33,000.
(iii) 239 students earned between $24,000 and $30,000.

• A) (i), (ii), and (iii) are all correct statements.
• B) (i) is a correct statement but not (ii) or (iii).
• C) (i) and (iii) are correct statements but not (ii).
• D) (i) and (ii) are correct statements but not (iii).
• E) (ii) and (iii) are correct statements but not (i).

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Definitions:

Core Characteristics Model

A framework used to identify and describe the main attributes or features of an object or concept.

Job Enrichment

The process of making a job more rewarding and satisfying by adding more meaningful tasks and duties, which can enhance employee motivation and productivity.

Unenriched Jobs

Positions that offer little to no variety, challenge, or sense of accomplishment, often leading to employee dissatisfaction and lack of motivation.