Consider the Given Discrete Probability Distribution

question 127

Essay

Consider the given discrete probability distribution. Find P(x = 1 or x = 2). $$\begin{array} { | c | c | c | c | c | c | c | } \hline x & 0 & 1 & 2 & 3 & 4 & 5 \\\hline p ( x ) & .30 & .25 & .20 & .15 & .05 & .05 \\\hline\end{array}$$

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Definitions:

Tracking

The practice of placing students in specific curriculum paths based on their abilities, performance, or aptitudes.

Detracking

The educational strategy of removing tracking systems within schools to provide equal academic opportunities to all students.

High-stakes Testing

Testing systems where significant decisions or outcomes, like graduation or professional certification, depend on the test taker's performance.

Standardized Tests

Assessments designed to measure a test-taker's knowledge or abilities in a uniform manner, allowing for comparison across different individuals or groups.