Chapter 5: Q76. (page 228)

TRANSPORTATION For Exercises 74鈥�76, refer to the graph at the right. (Lesson 2-5)
Predict the median age of vehicles on the road in 2010.

Short Answer

Expert verified

The median age of vehicles on the road in 2010 is 8.9.

Step by step solution

Step-1 – Given

The given image is:

Step-2 – To determine

We have to find the median age of vehicles on the road in 2010.

Step-3 – Calculation

The scatter plot for (x, y) is:

From the graph we see that the points are almost on a line.

To find the slope we take first two points (0, 4.9) and (5, 5.4).

Slope is = m = $\frac{(5.4 鈭� 4.9)}{5 鈭� 0} = 0.1$ .

y-intercept = b = 4.9.

So, the equation is:

$\begin{array}{l} y = m x + b \\ y = 0.1 x + 4.9 \end{array}$

Hence, the prediction equation is $y = 0.1 x + 4.9$ .

For 2010, $x = 2010 鈭� 1970 = 40$ .

For $x = 40$ ,

$\begin{array}{l} y = 0.1 x + 4.9 \\ y = 0.1 (40) + 4.9 \\ y = 8.9 \end{array}$

So, the median age of vehicles on the road in 2010 is 8.9.

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91影视

TRANSPORTATION For Exercises 74鈥�76, refer to the graph at the right. (Lesson 2-5)
Predict the median age of vehicles on the road in 2010.

Short Answer

Step by step solution

Step-1 – Given

Step-2 – To determine

Step-3 – Calculation

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Recommended explanations on Math Textbooks

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91影视

TRANSPORTATION For Exercises 74鈥�76, refer to the graph at the right. (Lesson 2-5)Predict the median age of vehicles on the road in 2010.

Short Answer

Step by step solution

Step-1 – Given

Step-2 – To determine

Step-3 – Calculation

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Math Textbooks

Discrete Mathematics

Calculus

Logic and Functions

Decision Maths

Applied Mathematics

Pure Maths

Study anywhere. Anytime. Across all devices.

TRANSPORTATION For Exercises 74鈥�76, refer to the graph at the right. (Lesson 2-5)
Predict the median age of vehicles on the road in 2010.