Solutions Statistics

A large mail-order house believes that there is a linear relationship between the weight of the mail

Question: A large mail-order house believes that there is a linear relationship between the weight of the mail it receives and the number of orders to be filled. It would like to investigate the relationship in order to predict the number of orders based on the weight of the mail. From an operational perspective, knowledge of the number of orders will help in the planning of the order-fulfillment process. A sample of 25 mail shipments is selected within a range of 200 to 700 pounds. The results are as follows. (MAIL)

Weight of Mail Orders (Pounds) (In Thousands)		Weight of Mail Orders (Pounds) (In Thousands)
216	6.1	432	13.6
283	9.1	409	12.8
237	7.2	553	16.5
203	7.5	572	17.1
259	6.9	506	15.0
374	11.5	528	16.2
342	10.3	501	15.8
301	9.5	628	19.0
365	9.2	677	19.4
384	10.6	602	19.1
404	12.5	630	18.0
426	12.9	652	20.2
482	14.5