User Account

All Pages

Linear relationship between the weight of the mail

Assignment Help Basic Statistics
Reference no: EM132401476

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 15 mail shipments is selected within a range of 200 to 700 pounds. The results are as follows.

Weight of Mail (Pounds)             Orders (In Thousands)

216                                                      6.1

283                                                      9.1

237                                                      7.2

374                                                     11.5

342                                                     10.3

384                                                     10.6

482                                                     14.5

432                                                     13.6

409                                                     12.8

553                                                     16.5

572                                                     17.1

501                                                     15.8

628                                                     19.0

677                                                     19.4

602                                                     19.1

a. Construct a scatter plot.

b. Assuming a linear relationship, use the least-squares method to find the regression coefficients b0 and b1.

c. Interpret the meaning of the slope b1 in this problem.

d. Predict the mean number of orders when the weight of the mail is 500 pounds.

Using the results for above question

a. Determine the coefficient of determination r2 and interpret its meaning.

b. Find the standard error of the estimate.

c. How useful do you think this regression model is for predicting the number of orders?

Reference no: EM132401476

Questions Cloud

Approximation of the binomial distribution : Use the? P-value method. Use the normal distribution as an approximation of the binomial distribution.
Assignment - Managing Projects : Assignment - Managing Projects. Outline the role of a project manager. What are their main objectives? Make a list of their duties in your workplace
What is the probability that a randomly-selected : Bag bag of tulip bulbs purchase from a nursery contains 25 red tulip bulbs, 30 yellow tulip bulbs, add 45 tulip bulbs.
Predicting the future : How many data points must we have before we are certain about predicting the future?
Linear relationship between the weight of the mail : 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.
Create a relationship between the two tables : The Morris Arboretum in Chestnut Hill, Pennsylvania tracks donors in Excel. They also use Excel to store a list of plants in stock. As donors contribute funds.
Analyze the internal and external environment : Analyze the internal and external environment, as well as the performance and strategy used by the organization's leaders in marketing, finance and operations
Concentration of dopamine in the brains of several rats : The mean concentration was 1,249 ng/gm and the standard deviation was 145 ng/gm.
How many calls would we simulate for a particular day : If we had the random number .396, how many calls would we simulate for a particular day?

Reviews

Write a Review

Basic Statistics Questions & Answers

  Describe the protection offered by the plan

If the acceptable quality level is 0.05% nonconforming and the limiting quality level is 6% nonconforming, describe the protection offered by the plan at these quality levels.

  Single-acting- and a double-acting hydraulic cylinder

1. What is the difference between a single-acting- and a double-acting hydraulic cylinder?

  How large a sample to take to compute true proportion

How large a sample must one take to be 90% confident that the estimate is within 0.05 of the true proportion of women over 55 who are widows?

  Carry out a hypothesis test

The mean height of a certain kind of plant is 128 centimeters. Suppose we want to carry out a hypothesis test to see if the mean height when these plants are treated with a certain chemical differs from 128.

  Apologize for the delay and poor quality of the merchandise

Go by the warehouse and take the athletic director a new shipment of shoes and apologize for the delay and poor quality of the merchandise.

  Use given fact to find the mean of y from figure

The mean of a continuous random variable is the balance point of its density curve. Use this fact to find the mean of Y from Figure.

  In an inertia welding experiment a sample of 50 welds were

in an inertia welding experiment a sample of 50 welds were tested. the sample mean and sample standard deviation of the

  Binomial with a correction for continuity

Use the normal approximation to the binomial with a correction for continuity. Round your answer to at least three decimal places. Do not round any intermediate steps.

  What is the percentile rank for score

From Data Set 1, for a first age at marriage of 33.44, the proportion of area beyond the z-score associated with this age is 0.05.

  Data using a t-test

Design a basic study, or use your research idea, in which you could analyze your data using a t-test.

  Sampling distribution in central limit theorem

According to Central Limit Theorem, how big of sample is essential to be sure sampling distribution of sample means is normally distributed.

  Using analytical methods find the pdf of z

Using analytical methods, find the PDF of Z as well as the mean-squared value, E [Z2] .-  Using MATLAB, create a histogram for the probability densities for the random variable Z .

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +1-415-670-9521

Phone: +1-415-670-9521

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd