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The following table displays the joint probability distribution of two discrete random variables X and Y. Compute the variance for the linear...
This question is about economics, I don't know how to solve it, please help me solve it, thanks. I need a detailed solution.
1. A company hires management trainees for entry level sales positions. Past experience indicates that only 20% will still be employed at the end of nine months. Assume the company recently hired six trainees.
What is the standard deviation of the number of trainees that will still be employed at the end of nine months?
2. The following table displays the joint probability distribution of two discrete random variables X and Y.
( I put the question in the attachment, please see it)
