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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:

Concrete Operations

A stage in Piaget's theory of cognitive development where children gain the ability to think logically about concrete events.

Formal Operations

The stage of cognitive development, according to Piaget, where individuals are able to think abstractly, reason logically, and manage problems systematically.

Jean Piaget

A Swiss psychologist known for his pioneering work in child development and cognitive psychology.

Sensorimotor Stage

The first stage in Piaget's theory of cognitive development, where infants learn about the world through their senses and motor activities.

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