Chapter 12: Q.29 (page 717)
When testing the significance of the correlation coefficient, what is the alternative hypothesis?
The alternative hypothesis can be expressed as there is some significant correlation between the two variables in the population.
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Does the line seem to fit the data? Why or why not?
The price of a single issue of stock can fluctuate throughout the day. A linear equation that represents the price of stock for Shipment Express is where x is the number of hours passed in an eight-hour day of trading.
What are the slope and y-intercept? Interpret their meaning.
Emma’s Extreme Sports hires hang-gliding instructors and pays them a fee of per class as well as per student in the class. The total cost Emma pays depends on the number of students in a class. Find the equation that expresses the total cost in terms of the number of students in a class.
Due to erosion, a river shoreline is losing several thousand pounds of soil each year. A linear equation that expresses the total amount of soil lost per year is .
What is the y-intercept? Interpret its meaning.
How many acres will be left to mow after hours of work?
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