Typists' Errors Narrative the Random Variable X Is Defined as the Number of the Number

question 146

Essay

Typists' Errors Narrative
The random variable x is defined as the number of mistakes made by a typist on a randomly chosen page of a physics thesis. The probability distribution follows:
-Refer to Typists' Errors Narrative. In what fraction of pages in the thesis would the number of mistakes made be within two standard deviations of the mean?

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Definitions:

Retention Ratio

The segment of net earnings kept by a corporation instead of being paid out to its shareholders in the form of dividends.

Net Income

It represents the total earnings of a company after subtracting all expenses, taxes, and losses from the total revenue.

Cash Dividends

Payments made by a company out of its earnings to its shareholders, typically in the form of cash, representing a portion of the company's profits.

Retention Ratio

The percentage of net income that is retained in the business rather than paid out as dividends; synonymous with Plowback Ratio.