I If the Null Hypothesis States That There Is No

question 73

Multiple Choice

i. If the null hypothesis states that there is no difference between the mean income of males and the mean income of females, then the test is one-tailed. ii. If we are testing for the difference between two population means, it is assumed that the sample observations from one population are independent of the sample observations from the other population.
iii. The critical value for the claim that the difference of two means is less than zero with a level of significance of 0.025 and sample sizes of nine and seven, is -2.179.

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

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Definitions:

Assembly-Line Job

Positions in a manufacturing process where each worker is responsible for a specific, repetitive task in the sequence of production.

Job Design Strategy

The process of defining how work will be performed and what tasks will be required in a given job.

Job Simplification

The process of breaking down jobs and tasks into simpler components or steps to increase productivity and reduce complexity.

Narrow Job Scope

Employment descriptions that are highly specialized or focused, with limited variety and breadth in the tasks performed.