A sample of 100 cars driving on a freeway during a morning commute was drawn, and the number of occupants in each car was recorded. The results were as follows: Occupants | 1 2 3 4 5 Number of Cars 70 15 10 3 2 а. Find the sample mean number of occupants. b. Find the sample standard deviation of the number of occupants. Find the sample median number of occupants. Compute the first and third quartiles of the number of occupants. What proportion of cars had more than the mean number of occupants? For what proportion of cars was the number of occupants more than one standard deviation greater than the mean? For what proportion of cars was the number of occupants within one standard C. d. е. f. g. deviation of the mean?

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Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.