Chapter 16.1, Problem 4E

A highway department is studying the relationship between traffic flow and speed. The following model has been hypothesized.

y = β₀ + β₁x + ε

where

y = traffic flow in vehicles per hour

x = vehicle speed in miles per hour

The following data were collected during rush hour for six highways leading out of the city.

Traffic Flow (y)	Vehicle Speed (x)
1256	35
1329	40
1226	30
1335	45
1349	50
1124	25

1. a. Develop an estimated regression equation for the data.
2. b. Use α = .01 to test for a significant relationship.