4. To help Companies in the U.S. car rental market vary greatly in terms of the size of the fleet, the number of locations, and annual revenue. In 2011, Hertz had 320,000 cars in service and annual revenue of approximately $4.2 billion. The following data show the number of cars in service (1000s) and the annual revenue ($millions) for six smaller car rental companies. Revenue ($millions) Company U-Save Auto Rental System, Inc. Cars (1000s) 111.5 1182 Payless Car Rental System, Inc. 100.0 1353 ACE Rent A Car 93.3 1004 Rent-A-Wreck of America 54.5 373 Triangle Rent-A-Car 47.2 409 Affordable/Sensible 35.3 327 a. Develop a scatter diagram with the number of cars in service as the independent variable. What does the scatter diagram developed in part (a) indicate about the relationship between the two variables? b. Develop and interprete the estimated regression equation C. Does the above data provide a good model fit for the estimate regression equation?

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Unitary Method

The word “unitary” comes from the word “unit”, which means a single and complete entity. In this method, we find the value of a unit product from the given number of products, and then we solve for the other number of products. 

Speed, Time, and Distance

Imagine you and 3 of your friends are planning to go to the playground at 6 in the evening. Your house is one mile away from the playground and one of your friends named Jim must start at 5 pm to reach the playground by walk. The other two friends are 3 miles away.

Profit and Loss

The amount earned or lost on the sale of one or more items is referred to as the profit or loss on that item.

Units and Measurements

Measurements and comparisons are the foundation of science and engineering. We, therefore, need rules that tell us how things are measured and compared. For these measurements and comparisons, we perform certain experiments, and we will need the experiments to set up the devices.