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For the Table Shown Below, the Random Variable X Is

question 65

Essay

For the table shown below, the random variable x is the number of males with tinnitus (ringing ears) among
four randomly selected males, based on a medical journal. Find the mean and standard deviation for the
random variable x. Use the range rule of thumb to identify the range of values that are not significant for the
number of males with tinnitus among four randomly selected males. Is getting three males with tinnitus among
four randomly selected males a significantly high number? xP(x)00.67410.28020.04430.00340+\begin{array} { | c | c | } \hline \boldsymbol { x } & \boldsymbol { P } ( \boldsymbol { x } ) \\\hline 0 & 0.674 \\1 & 0.280 \\2 & 0.044 \\3 & 0.003 \\4 & 0 + \\\hline\end{array}


Definitions:

P-Value

The probability of obtaining a test statistic at least as extreme as the one that was actually observed, assuming that the null hypothesis is true.

Null Hypothesis

A hypothesis used in statistical testing that suggests no significant effect or association between variables, often symbolized as H0.

Disapproval Rate

The percentage of respondents in a survey or study who express a negative opinion about a particular topic or issue.

Political Committee

An organization that gathers contributions or makes expenditures under certain regulatory frameworks with the aim of influencing electoral outcomes or policy decisions.

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