A Sample of 35 Students Enroll in a Program That $\bar { x } = 10$

question 67

Multiple Choice

A sample of 35 students enroll in a program that claims to improve scores on the quantita reasoning portion of the Graduate Record Examination (GRE) . The participants take a mc GRE test before the program begins and again at the end to measure their improvement.
The mean number of points improved was $\bar { x } = 10$ . Assume the standard deviation is $\sigma = 46$ and let $\mu$ be the population mean number of points improved. To determine whether the program is effective, a test is made of the hypotheses $H _ { 0 } : \mu = 0$ versus $H _ { 1 } : \mu > 0$ .
Compute the $P$ -value. ive

• A) 0.0496
• B) 0.0248
• C) 0.0992
• D) 1.2861

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Definitions:

Outsiders

Individuals who are not part of a specific group, organization, or community, often lacking the specific knowledge or experiences of that group.

Organizational Bias

Unfair favoritism or prejudice within an organization, often leading to unequal treatment of employees.

Benefits

Various forms of value or compensation provided by employers to employees over and above regular salaries, such as health insurance, retirement plans, and paid time off.

Credibility

The quality of being trusted and believed in, often resulting from a history of accuracy, reliability, and integrity.