Which of the Following Statements Is Always Correct

question 9

Short Answer

Which of the following statements is always correct? $$\begin{array} { l l } \text { A. } & P ( A \frown B ) = P ( A ) \times P ( B ) \\\hline \text { B. } & P ( A \cup B ) = P ( A ) + P ( B ) \\\hline \text { C. } & P ( A \cup B ) = P ( A ) + P ( B ) + P ( A \frown B ) \\\hline \text { D. } & P ( A ) = 1 - P ( A ) \\\hline\end{array}$$

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Definitions:

Standard Deviation

A measure of the amount of variation or dispersion in a set of values, indicating how much the values differ from the mean of the data set.

Normal Model

A statistical model representing data that follow a bell-shaped, symmetrical distribution characterized by mean and standard deviation.

Patrol

A patrol refers to the act of moving through an area at regular intervals for security purposes, often conducted by military, police, or security personnel to ensure safety and enforce laws.

75th Percentile

A statistical measure indicating that 75% of the observed values are below this point, showcasing an upper quantile range.