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

---

Definitions:

Straight-Line Depreciation

An approach to apportion the expense of a tangible resource over its effective life period in consistent annual installments.

Incremental Cash Flow

The additional cash flow a company receives from undertaking a new project, distinct from its existing cash flow.

Lease Payments

Periodic payments made by a lessee to a lessor for the use of an asset, like equipment or real estate, over a specified lease term.

CCA Class

Categories used in Canadian tax law to determine the depreciation rate for different types of business assets.