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  3. the first few problems ask you to "describe" a ran

The first few problems ask you to "describe" a random variable, which means: Give the sample space...

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Basic Math

The first few problems ask you to "describe" a random variable,which means:

Give the sample space S (the result of the random experiment,from which the output of the random variable is calculated);

Give RX (you may schematize it if it is very complicated orinfinite);

Give fX (you may use fractions or decimals) and show how it wascalculated unless it is very simple;

Problem 2:

Suppose we have a sack with 2 red balls and 5 black balls, andwe draw balls without replacement until a red ball isdrawn. Let X = "the number of balls drawn".

Describe the random variable XX.

Answer & Explanation Solved by verified expert
4.1 Ratings (512 Votes)
Scenerio Sack 2R 5B Balls are drawn without replacement until a R is drawn X the number of balls drawn Trial 1 1R is drawn So X 1 PX1    See Answer
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