A Null Hypothesis Is π ≥ 0

question 10

Multiple Choice

A null hypothesis is π ≥ 0.65. To test this hypothesis, a sample of 400 is taken and alpha is set at 0.05. If the true proportion is π = 0.60, what is the probability of a Type II error?

• A) 0.17
• B) 0.45
• C) 0.95
• D) 0.67
• E) 0.33

Infer the importance of control and control groups in ensuring the validity of experimental studies.

Distinguish between types of experimental designs and their applicability in research.

Interpret the concepts of attrition, maturation, diffusion, and how they affect research outcomes.

Grasp the significance of random assignment in experimental research and its role in establishing causation.