The first 25 papers showed a mean score of 771 with a

Assignment Help Science
Reference no: EM13459048

To test the hypothesis that students who finish an exam first get better grades, Professor Hardtack kept track of the order in which papers were handed in. The first 25 papers showed a mean score of 77.1 with a standard deviation of 19.6, while the last 24 papers handed in showed a mean score of 69.3 with a standard deviation of 24.9. Is this a significant difference at a = .05? (a) State the hypotheses for a right-tailed test. (b) Obtain a test statistic and p-value assuming equal variances. Interpret these results. (c) Is the difference in mean scores large enough to be important? (d) Is it reasonable to assume equal variances? (e) Carry out a formal test for equal variances at a = .05, showing all steps clearly.

Reference no: EM13459048

Questions Cloud

You will write a 2 to 3 page essay in which you explain the : you will write a 2 to 3 page essay in which you explain the importance of byzantium to the medieval world. nbsp your
Explain the objective theory of contracts how does that : 1. what are the four elements of a valid contract?2. describe the objective theory of contracts. how does that theory
Five test vehicles of each and every type were crashed with : in a bumper test three types of autos were deliberately crashed into a barrier at 5 mph and the resulting damage in
What physiological changes happen in brain due to stress : provide a 1-page description of a stressful event currently occurring in your life which would be staying in a job
The first 25 papers showed a mean score of 771 with a : to test the hypothesis that students who finish an exam first get better grades professor hardtack kept track of the
How did the americans view success for the third world : how did the americans view success for the third world differ from the soviet view? why did these superpowers focus on
How does the catholic churchs definition of heaven and hell : 1.after reading this chapter do you feel it is difficult to have a truly just war?2.was the bombing of hiroshima just?
What were the strengths and weaknesses of carolingian : what were the strengths and weaknesses of carolingian institutions of government warfare and defense?no words
Choose two of the five theoriesorientations to learning : select two of the five theoriesorientations to learning behaviorism cognitivism humanism social learning or

Reviews

Write a Review

Science Questions & Answers

  Journal of pharmaceutical sciences

This journal is a scientific publication of Indian Pharmaceutical Association and highlights various bright points of it.

  Optical fibres

This document discuss about the main attributes and characteristics of optical fibres.

  Micro organisms

This project report reveals the fact and proves a specific objective mentioned to be studied upon.

  Describing histology of an organ

The discussion of the technique should include a literature review on the evolution of the technique.

  Interpret the sensitivity of mammography

Calculate and interpret the sensitivity of mammography. Diagnostic test with Sensitivity 50%, Specificity 50% and prevalence 50%. Crude mortality rate. Damage caused by motor vehicle accidents.

  Discuss the role that science plays in your daily life

Role that science plays in your daily life and Integrity, Intensity, Innovation, and involvement in scientific field

  Prepare a flexible budget gator divers

Prepare a Flexible Budget Gator Divers is a company that provides diving services such as underwater ship repairs to clients in the Tampa Bay area.

  Neurological disorders

Designing a neuroprosthesis for the neurological disorders

  Complexity of cell surfaces

Lipid rafts provide another example of the complexity of cell surfaces in both their structural character and biologic functionality. Please explain the nature of these structures and their functionality.

  Exploratory activity on bird beaks

Describe how natural selection and evolution are demonstrated by this activity

  Spatial and temporal variation of heat content in the upper

In this study the temporal and spatial variation of heat content in the upper 70m layer of the Arabian Sea was for a period of 1991 to 2008 have been attempted.

  Earthquake databases

Earthquake Databases

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!

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