The Random Variable X Represents the Number of Tests That

question 6

Multiple Choice

The random variable x represents the number of tests that a patient entering a hospital will have along with the corresponding probabilities. Find the mean and standard deviation. $$\begin{array} { l | c | c | c | c | c } \mathrm { x } & 0 & 1 & 2 & 3 & 4 \\\hline \mathrm { P } ( \mathrm { x } ) & \frac { 3 } { 17 } & \frac { 5 } { 17 } & \frac { 6 } { 17 } & \frac { 2 } { 17 } & \frac { 1 } { 17 }\end{array}$$

• A)mean: 1.59; standard deviation: 1.09
• B)mean: 1.59; standard deviation: 3.71
• C)mean: 2.52; standard deviation: 1.93
• D)mean: 3.72; standard deviation: 2.52

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Misdemeanor

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