I We Use the Pooled Estimate of the Proportion in Testing

question 95

Multiple Choice

i. We use the pooled estimate of the proportion in testing the difference between two population proportions when the samples are not chosen independently. ii. The pooled estimate of the proportion is found by dividing the total number of samples by the total number of successes.
iii. A committee studying employer-employee relations proposed that each employee would rate his or her immediate supervisor and in turn the supervisor would rate each employee. To find reactions regarding the proposal, 120 office personnel and 160 plant personnel were selected at random. Seventy-eight of the office personnel and 90 of the plant personnel were in favour of the proposal. Computed z= 1.48. At the 0.05 level, it was concluded that there is sufficient evidence to support the belief that the proportion of office personnel in favour of the proposal is greater than that of the plant personnel.

• A) (i), (ii), and (iii) are all false 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) (i) is a correct statement, but not (ii) and (iii).

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Definitions:

Civil Rights Act

A landmark piece of federal legislation in the United States that outlaws discrimination based on race, color, religion, sex, or national origin.

Employment Discrimination

Unfair treatment of employees based on race, gender, age, religion, or other protected characteristics.

Taft-Hartley Act

Federal legislation designed to curtail some of the powers that unions had acquired under the Wagner Act; designates certain union actions as unfair. Also called Labor-Management Relations Act.

Wagner Act

The first major piece of federal legislation adopted explicitly to encourage the formation of labor unions and provide for collective bargaining between employers and unions as a means of obtaining the peaceful settlement of labor disputes.