Math Problem Statement

Let Y represent the profit (or loss) for a certain company X years after 1960. Based on the data shown below, a statistician calculates a linear model Y=0.38X+14.81.

xy

3

15.85

4

16.5

5

16.15

6

18.5

7

16.25

8

18.2

Use the model to estimate the profit in `1967

y = 

Solution

To estimate the profit in 1967, we calculate XX first:

Step 1: Determine XX

Since XX represents the number of years after 1960: X=19671960=7X = 1967 - 1960 = 7

Step 2: Use the linear model

The given model is: Y=0.38X+14.81Y = 0.38X + 14.81 Substitute X=7X = 7 into the equation: Y=0.38(7)+14.81Y = 0.38(7) + 14.81

Step 3: Calculate YY

Y=2.66+14.81=17.47Y = 2.66 + 14.81 = 17.47

Final Answer:

The estimated profit in 1967 is: Y=17.47Y = 17.47

Would you like a detailed explanation or assistance with related calculations?


Related Questions:

  1. How is the slope 0.380.38 interpreted in the context of this problem?
  2. What would be the estimated profit in 1970 using this model?
  3. How does the actual profit for X=7X = 7 (from the table) compare to the estimated value?
  4. Can this linear model predict accurately beyond 1967? Why or why not?
  5. What is the intercept 14.8114.81, and what does it represent in this scenario?

Tip:

Always check if the given data points closely align with the model for better reliability of predictions!

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Math Problem Analysis

Mathematical Concepts

Linear Equations
Algebra
Data Modeling

Formulas

Linear model formula: Y = mX + b

Theorems

Slope-Intercept Form of a Linear Equation

Suitable Grade Level

Grades 8-10