A Final Exam in Math 160 Has a Mean of 73

question 79

Multiple Choice

A final exam in Math 160 has a mean of 73 with standard deviation 7.8. If 24 students are randomly selected, find the probability that the mean of their test scores is less than 70.

• A) 0.1006
• B) 0.0278
• C) 0.9699
• D) 0.0301

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Definitions:

Mastery of Tasks

The degree to which an individual has acquired the knowledge, skills, and abilities to proficiently perform specific tasks.

Self-perception Theory

A theory that suggests individuals develop their attitudes and feelings by observing their own behavior and concluding what attitudes must have caused it.

Social Learning

The process of acquiring new behaviors, attitudes, or skills by observing the actions and outcomes of others.

Theory of Planned Behavior

A psychological theory that predicts an individual's intention to engage in a behavior at a specific time and place, considering attitudes, norms, and perceived control.