On an Exam on Probability Concepts, Sue Had an Answer $\frac { 13 } { 8 }$

question 50

Essay

On an exam on probability concepts, Sue had an answer of $\frac { 13 } { 8 }$ for one problem. Explain how she knew that this result was incorrect.

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Definitions:

Test Statistic

A calculated value from sample data used to decide whether to reject the null hypothesis in the context of a hypothesis test.

Normal Distribution

It is a probability distribution that features a symmetric alignment around the mean, emphasizing that data around the mean occur more than data at a distance.

Degrees of Freedom

The count of separate values or amounts that are capable of changing in an analysis while still respecting all limitations.

T-test

A statistical method employed to ascertain whether there's a notable disparity between the averages of two sets.