A Random Sample of N = 4 Scores Is Obtained

question 46

Multiple Choice

A random sample of n = 4 scores is obtained from a normal population with µ = 30 and σ = 8.What is the probability that the sample mean will be smaller than M = 22?

• A)0.00003
• B)0.0228
• C)0.1587
• D)0.3085

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Definitions:

Right-to-Work Laws

Under the Taft-Hartley Act, states are permitted to pass these laws, which prohibit the union shop. (Union membership cannot be made a condition of securing employment.)

Landrum-Griffin

Refers to the Labor-Management Reporting and Disclosure Act of 1959, which aims to protect union members' rights and improve union governance.

Union Election

A formal voting process where workers decide whether to be represented by a labor union or not in their workplace.

Taft-Hartley Act

A 1947 U.S. federal law that restricted the activities and power of labor unions, including outlawing closed shops and permitting states to pass right-to-work laws.