Given the following information:
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Compute:
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What is the distance between the two points and in a Cartesian coordinate system?
What is the derivative of , evaluated at ?
The daily expenses of summer tourists in Vienna are analyzed. A survey with tourists is conducted. This shows that the tourists spend on average EUR. The sample variance is equal to .
Determine a confidence interval for the average daily expenses (in EUR) of a tourist.
For 58 firms the number of employees and the amount of expenses for continuing education (in EUR) were recorded. The statistical summary of the data set is given by:
Variable | Variable | |
---|---|---|
Mean | 52 | 240 |
Variance | 149 | 3259 |
The correlation between and is equal to 0.75.
Estimate the expected amount of money spent for continuing education by a firm with 53 employees using least squares regression.