Determine What Signs on Values of X and Y Would $x y < 0$

question 235

Multiple Choice

Determine what signs on values of x and y would make the statement true. Assume that x and y are not 0.
- $x y < 0$

• A) \(x\) and \(y\) have the same sign.
• B) \(x\) and \(y\) have different signs.
• C) \(x\) and \(y\) must be negative.
• D) \(x\) and \(y\) must be positive.

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Definitions:

Type I Error

A Type I Error occurs when the null hypothesis is incorrectly rejected when it is actually true.

Set Of Comparisons

A general term that could describe various statistical or evaluative processes aimed at comparing different sets of data or outcomes.

Familywise Error

The probability of making one or more Type I errors across multiple hypothesis tests.

Tukey Test

A statistical test used to compare the means of three or more groups to find out which ones significantly differ from each other.