Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Statistics and Probability Expert

Hypothesis test for difference between two population variances.

A professor in the accounting department of a business school claims that there is much more variability in final exam scores of students taking the introductory accounting course as a necessity than for students taking the course as part of a main in accounting.  Random samples of 13 non accounting majors (group 1) and 10 accounting majors (group 2) are taken from the professor's class roster in his large lecture, and the following results are computed based on the final exam scores:

n1 = 13 S12 = 210.2

n2 = 10 S22 = 36.5

At the 0.01 level of significance, is there evidence to support the professor's claim?

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M920618

Have any Question? 


Related Questions in Statistics and Probability

Letnbsp st be a periodic triangle wave as illustrated in

Let  S(t) be a periodic triangle wave as illustrated in the accompanying figure. Suppose a random process is created according to  is a random variable uniformly distributed over  (a) Find the probability mass function o ...

Letnbspnbspbe a random sum of discrete iid random

Let   be a random sum of discrete IID random variables. Further, let   be the probability-generating functions of  N and X, respectively. Find the probability-generating function of S assuming that is independent of the ...

Consider a modified version of the experiment in example

Consider a modified version of the experiment in Example where we flip a coin until the first occurence of tails or until we flip the coin four times, whichever comes first. (a) List the possible outcomes of this experim ...

Suppose hxz is the probability-generating function of some

Suppose H X (z) is the probability-generating function of some random variable X with PMF P X  (k ). In terms of P X  (k ), find the PMF of the random variable Y if its probability-generating function is given as in each ...

Write a matlab program to generate a shot noise process

Write a MATLAB program to generate a shot noise process with   and the constant b is chosen so that   For this program, assume that carriers cross the depletion region at a rate of 10 13  per second. Plot a member functi ...

Letnbspnbspwe desire to findnbspnbspwrite a matlab program

Let    We desire to find    Write a MATLAB program to estimate this probability through Monte Carlo simulation techniques. If we want to be 90% sure that our estimate is within 5% of the true value, about how many times ...

Q1 consider the following simple linear regression models

Q1. Consider the following simple linear regression models for data (x 1 , y 1 ), (x 2 , y 2 ), . . . (x n , y n ): M 1 : y i = β 0 + β 1 x i + ε i , i = 1, 2, . . . , n M 2 : y i = α 0 + α 1 (x i - x¯) + ε i , i = 1, 2, ...

We wish to generate a periodic sequence of numbers that

We wish to generate a periodic sequence of numbers that cycles through the integers from 1 to 100 in a pseudorandom fashion. Choose a pair of integers that can be used in the power residue method to produce a sequence of ...

Under what condition might you prefer to use the median

Under what condition might you prefer to use the median rather than the mean as the best measure of central tendency? Explain why

Let x andnbsp y be zero-mean unit-variance gaussian random

Let X and  Y be zero-mean, unit-variance Gaussian random variables with correlation coefficient, P . Suppose we form two new random variables using a linear transformation: Find constraints on the constants a, b, c and d ...

  • 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

A cola-dispensing machine is set to dispense 9 ounces of

A cola-dispensing machine is set to dispense 9 ounces of cola per cup, with a standard deviation of 1.0 ounce. The manuf

What is marketingbullwhat is marketing think back to your

What is Marketing? • "What is marketing"? Think back to your impressions before you started this class versus how you

Question -your client david smith runs a small it

QUESTION - Your client, David Smith runs a small IT consulting business specialising in computer software and techno

Inspection of a random sample of 22 aircraft showed that 15

Inspection of a random sample of 22 aircraft showed that 15 needed repairs to fix a wiring problem that might compromise

Effective hrmquestionhow can an effective hrm system help

Effective HRM Question How can an effective HRM system help facilitate the achievement of an organization's strate