What is the standard deviation of the regression

Assignment Help Science
Reference no: EM13986652

You have 82 observations with which to estimate a regression model of the form yi = ˆα+βxˆi. Supposefurther that the sum of squared residuals P82i=1 2i = 2156.36.

(a) What is the standard deviation of the regression?

(b) Suppose ˆα = .78 and βˆ = 1.75. What is your prediction for yi when xiis 10? Is it likely that yourprediction will be true? Why or why not?

(c) Suppose the sum of squared deviations from the mean of x, P82i=1(xi - x¯)2 = 47.57. What is thestandard error for βˆ?

(d) Test the two-sided hypothesis where HO : β = 0 and HA : β 6= 0. Remember to use the estimatefor βˆ in the numerator and your answer for part (c) in the denominator to construct a t - stat,then compare it to some relevant critical value, at whatever level you want.

 

 

Reference no: EM13986652

Questions Cloud

A government agency in a northestern city : A government agency in a Northestern city wishes to evaluate the effectiveness of a recently launched program to prevent alcohol drinking among teenagers.  Before the program was lauched a study found that the proportion of teen-drinking in the city ..
Monthly transactions-ten-column work sheet : Moonlight Bay Inn is incorporated on January 2, 2014, by its three owners, each of whom con- tributes $20,000 in cash in exchange for shares of stock in the business. In addition to the sale of stock, the following transactions are entered into du..
Explain why the costs assigned to inventory under lifo : Explain why the costs assigned to inventory under LIFO at the end of 2009 and 2010 are different than they are under FIFO.
An agency that offers tutoring students for students : An agency that offers tutoring students for students taking the SAT is interested in evaluating the effectiveness of their programs.  A random sample of 5 students is used to evaluate if their SAT score increases by more than 50 points after completi..
What is the standard deviation of the regression : You have 82 observations with which to estimate a regression model of the form yi = ˆα+βxˆi. Supposefurther that the sum of squared residuals P82i=1 2i = 2156.36.(a) What is the standard deviation of the regression?
Determine the principal stresses at this point : A single horizontal force P of magnitude 150 lb is applied to end D of lever ABD. If the portion AB of the lever has a diameter of 1.2 in.,Determine: Normal and shear stresses on an element located at point H on top of the rod (having sides parallel..
A standardized math test by a random sample : The followig table shows the results obtained on a standardized math test by a random sample of 5 students selected from students enrolled in a score-improvement training program across the nation.
Revenue and expense recognition and closing entries : Revenue  and  Expense  Recognition  and  Closing  Entries Two years ago, Darlene Darby opened a delivery service. Darby reports the following accounts on her income statement:
Describe central limit theorem and its application : Write a 300-500 word essay and describe the following terms: Central Limit Theorem and its application.  Confidence intervals using sample means and sample proportions

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