Suppose You Are Testing the Null Hypothesis That a Population

question 45

Multiple Choice

Suppose you are testing the null hypothesis that a population mean is less than or equal to 46, against the alternative hypothesis that the population mean is greater than 46.The sample size is 25 and α =.05.If the sample mean is 50 and the population standard deviation is 8, the observed z value is _______.

• A)2.5
• B)-2.5
• C)6.25
• D)-6.25
• E)12.5

---

Definitions:

Restatement

The act of revising or rephrasing content, usually to provide clarity or correction.

Clarification

The act of making a statement or situation less confused and more comprehensible.

Open-Ended Question

A type of question that allows for a free-form response, providing more depth and insight than a simple yes or no answer.

Restatement

The act of expressing the same idea or fact in different words, often to clarify or emphasize.