A store sells pre-cut lengths of materials. A customer wants to determine if there is a linear
Question:
A store sells pre-cut lengths of materials. A customer wants to determine if there is a linear relationship between the price ($/metre) and length (metres) of the materials. The customer takes a random sample of materials for sale and records the price and length.
Excel was then used to create a simple linear regression of price on length. Here is a table of the sample data, with the Excel regression output:
a) Write the estimated simple linear regression equation, using the names of the variables.
b) Interpret the slope for the customer.
c) Estimate the price of materials that is pre-cut to 1,000 metres in length. Comment on the reliability of your estimate.
Business Statistics A Decision Making Approach
ISBN: 9780133021844
9th Edition
Authors: David F. Groebner, Patrick W. Shannon, Phillip C. Fry