A Researcher Selects a Sample from a Population with μ

question 78

Multiple Choice

A researcher selects a sample from a population with μ = 30 and uses the sample to evaluate the effect of a treatment.After treatment,the sample has a mean of M = 32 and a variance of s² = 6.Which of the following would definitely increase the likelihood of rejecting the null hypothesis?

• A)Increase the sample size
• B)Increase the sample mean
• C)Decrease the sample variance
• D)All of the other options will increase the likelihood of rejecting the null hypothesis.

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Definitions:

Fair

In a context of justice or equity, it refers to actions, processes, or distributions that are reasonable, unbiased, and equitable.

Expected Value

A statistical concept that calculates the average outcome of a random event, considering all possible outcomes and their probabilities.

Be Cautious

An admonition advising individuals to act with care and consideration of potential risks.

Thought-Activated Software

Software interfaces that are controlled through brain waves or thoughts, enabling hands-free operation.