Ask Homework Help/Study Tips Expert

A baseball player would like to conduct an experiment to determine how the weight of his bat, the speed of a pitch and the type of pitch affect the distance he can hit the ball in the air. The player will examine two different bat weights (32 ounces or 35 ounces), three pitch speeds (70, 80 or 90 miles per hour) and two types of pitch (fastball or curveball). Pitches will be thrown by a pitching machine to guarantee consistency. The baseball player will hit 15 balls using each of the factor level combinations, and the distance (in feet) that each ball travels before hitting the ground will be recorded.

1. Identify the following in this experiment:

(a) experimental units

(b) response variable

(c) factors

(d) factor levels

(e) treatments

(f) How should randomization be used in this experiment? Explain why this randomization is important.

(g) Suppose that one of the treatments results in the baseball player consistently hitting the ball farther than for the other treatments. Can we say that the treatment is the cause? Explain.

Design of Experiments 2

A cereal manufacturer is trying to increase sales of one of its breakfast cereals. The marketing director plans to conduct an experiment to investigate the effect of the colour of the cereal box and the shelf placement on the sales of the cereal. A total of 360 grocery stores in North America that carry this cereal are available for the study. For each store, the colour of the box (red, blue or yellow) and the shelf placement (top, middle or bottom shelf) will be randomly determined. Total sales will be compared at the end of a three-month period. The marketing director believes results may vary between Canada and the U.S., so the experiment is conducted separately for the 120 Canadian stores and the 240 American stores.

(a) What type of experiment is this? Identify the following in this experiment:

(b) experimental units

(c) response variable

(d) factors

(e) factor levels

(f) treatments

(g) Is there a blocking variable in this experiment? If so, what is it?

(h) How is the principle of control used in this experiment?

(i) How is the principle of repetition used in this experiment?

Matched Pairs Experiments

We would like to conduct an experiment to determine whether university students can text faster than they can type on the computer. Subjects will be given a paragraph to type. The same paragraph will be used whether it is being typed on a cell phone or on a computer. There are 25 volunteers available for the study.

1. Explain how a matched pairs experiment should be conducted to compare texting and typing speeds. Be sure to explain the role of randomization, and why it is important in this experiment.

Sampling Schemes

For each of the following proposed sampling schemes, identify (i) the type of sample that is obtained and (ii) any bias in the way the sample is chosen.

*Note: When conducting a survey by phone, by mail or even in person, there is always the possibility that someone will refuse to respond. This cannot be avoided, even using proper sampling techniques. For part (ii) of each question, only describe the potential bias (if any) introduced by the way the sample is selected.

(a) A random sample of five players from each of the league's 30 teams is selected. These selected players are contacted by a union representative.

(b) The survey is sent to all players in the league. Players are asked to respond by email.

(c) The survey is distributed to players attending an NHLPA meeting in New York.

(d) A random sample of seven NHL teams is selected. Ten players from each of these ten teams are randomly selected and are contacted by telephone to respond to the survey.

(e) Two hundred players are randomly selected from a list of all NHL players. Union representatives administer the survey in person to each of the selected players.

(f) The survey is posted on the NHLPA's private website. Players are invited to email their comments to a union representative.

Homework Help/Study Tips, Others

  • Category:- Homework Help/Study Tips
  • Reference No.:- M9788253

Have any Question?


Related Questions in Homework Help/Study Tips

Review the website airmail service from the smithsonian

Review the website Airmail Service from the Smithsonian National Postal Museum that is dedicated to the history of the U.S. Air Mail Service. Go to the Airmail in America link and explore the additional tabs along the le ...

Read the article frank whittle and the race for the jet

Read the article Frank Whittle and the Race for the Jet from "Historynet" describing the historical influences of Sir Frank Whittle and his early work contributions to jet engine technologies. Prepare a presentation high ...

Overviewnow that we have had an introduction to the context

Overview Now that we have had an introduction to the context of Jesus' life and an overview of the Biblical gospels, we are now ready to take a look at the earliest gospel written about Jesus - the Gospel of Mark. In thi ...

Fitness projectstudents will design and implement a six

Fitness Project Students will design and implement a six week long fitness program for a family member, friend or co-worker. The fitness program will be based on concepts discussed in class. Students will provide justifi ...

Read grand canyon collision - the greatest commercial air

Read Grand Canyon Collision - The greatest commercial air tragedy of its day! from doney, which details the circumstances surrounding one of the most prolific aircraft accidents of all time-the June 1956 mid-air collisio ...

Qestion anti-trustprior to completing the assignment

Question: Anti-Trust Prior to completing the assignment, review Chapter 4 of your course text. You are a manager with 5 years of experience and need to write a report for senior management on how your firm can avoid the ...

Question how has the patient and affordable care act of

Question: How has the Patient and Affordable Care Act of 2010 (the "Health Care Reform Act") reshaped financial arrangements between hospitals, physicians, and other providers with Medicare making a single payment for al ...

Plate tectonicsthe learning objectives for chapter 2 and

Plate Tectonics The Learning Objectives for Chapter 2 and this web quest is to learn about and become familiar with: Plate Boundary Types Plate Boundary Interactions Plate Tectonic Map of the World Past Plate Movement an ...

Question critical case for billing amp codingcomplete the

Question: Critical Case for Billing & Coding Complete the Critical Case for Billing & Coding simulation within the LearnScape platform. You will need to create a single Microsoft Word file and save it to your computer. A ...

Review the cba provided in the resources section between

Review the CBA provided in the resources section between the Trustees of Columbia University and Local 2110 International Union of Technical, Office, and Professional Workers. Describe how this is similar to a "contract" ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Why might a bank avoid the use of interest rate swaps even

Why might a bank avoid the use of interest rate swaps, even when the institution is exposed to significant interest rate

Describe the difference between zero coupon bonds and

Describe the difference between zero coupon bonds and coupon bonds. Under what conditions will a coupon bond sell at a p

Compute the present value of an annuity of 880 per year

Compute the present value of an annuity of $ 880 per year for 16 years, given a discount rate of 6 percent per annum. As

Compute the present value of an 1150 payment made in ten

Compute the present value of an $1,150 payment made in ten years when the discount rate is 12 percent. (Do not round int

Compute the present value of an annuity of 699 per year

Compute the present value of an annuity of $ 699 per year for 19 years, given a discount rate of 6 percent per annum. As