For the spring semester 2009, part time students at a college paid $486 per credit (unit or hour) for tuition and paid a mandatory part time student fee of $20 per semester. Let T be the total one-semester cost (in dollars) of tuition plus part time students fee for c credits of classes. (complete all parts).   a. Find the slope of the linear model that is described this situation. What does it mean in this situation? The slope is __. The tuition increases by $__ per credit.   b. Find an equation of the model.   c. Preform a unit analysis of the equation found in part b.

An outlier can reduce the accuracy of a linear model. True False

The following linear regression model can be used to predict ticket sales at a popular water park. Ticket sales per hour = - 631.25 + 11.25(current temperature in °F)23) Choose the statement that best states the meaning of the slope in this context. A)  The slope tells us that a one degree increase in temperature is associated with an average increase in ticket sales of 11.25 tickets. B)  The slope tells us that high temperatures are causing more people to buy tickets to the water park. C)  The slope tells us that if ticket sales are decreasing there must have been a drop in temperature. D)  None of these

The Terre Haute Association of Realtors conducts a study to examine the association between the size of a home (in square feet) and the price the home sells for (in dollars). a regression model is then created to predict the price based on the size of the home and is given by the following equation: Price = - 43511+86.3(Size) a) Interpret the slope and intercept of the model in context using a complete sentence. b) Predict the selling price of a home with 2000 square feet. c) Suppose R2- 9225 Interpret its meaning in context using a complete sentence. d) Would it be better for a person to experience a positive or negative residual in this context? Please explain in a complete sentence.

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Using the regression to model annual income, a variable for years of education has a slope = 2000. This means that the model predicts each additional year of education will yield an extra 2,000 for the average person's salary, regardless of how many total years of education a person has.  A. True B. False

The number (in millions) of employees working in educational services in a particular country was 16.6 in 2005 and 18.5 in 2014. Let x = 5 correspond to the year 2005, and estimate the number of employees in 2010. Assume that the data can be modeled by a straight line and that the trend continues indefinitely. Use two data points to find such a line and then estimate the requested quantity. Let y represent the number of employees. The linear equation that best models the number of employees (in millions) is (Simplify your answer. Use integers or decimals for any numbers in the equation. Round to the nearest hundredth as needed.) In 2010, the number (in millions) of employees working in education services would be (Type an integer or a decimal rounded to the nearest hundredth as needed.)

Data was collected for a regression analysis comparing car weight and fuel consumption. b0 was found to be 32.7, b1 was found to be -7.6, and R2 was found to be 0.86. Interpret the y-intercept of the line. On average, each one unit increase in the weight of a car decreases its ful consumption by 7.6 units. On average, when x=0, a car gets -7.6 miles per gallon. On average, when x=0, a car gets 32.7 miles per gallon. On average, each one unit increase in the weight of a car increases its fuel comsumption by 32.7 units. We should not interpret the y-intercept in this problem.

The number (in millions) of employees working in educational services in a particular country was 13.8 in 2005 and 18.2 in 2014. Let x = 5 correspond to the year 200 and estimate the number of employees in 2010. Assume that the data can be modeled by a straight line and that the trend continues indefinitely. Use two data points find such a line and then estimate the requested quantity. ... Let y represent the number of employees. The linear equation that best models the number of employees (in millions) is (Simplify your answer. Use integers or decimals for any numbers in the equation. Round to the nearest hundredth as needed.) In 2010, the number (in millions) of employees working in education services would be (Type an integer or a decimal rounded to the nearest hundredth as needed.)

Based on data collected from various moving companies, a homeowner uses the linear model y=1.5x+150y=1.5x+150 to predict the total cost of renting a moving truck, yy, for xx minutes. If the homeowner rents a moving truck for 6060 minutes, which statement best describes the slope of the linear model?