Compute the value of the test statistic

Reference no: EM131807287

Question: David Anderson has been working as a lecturer at Michigan State University for the last three years. He teaches two large sections of introductory accounting every semester. While he uses the same lecture notes in both sections, his students in the first section outperform those in the second section. He believes that students in the first section not only tend to get higher scores, they also tend to have lower variability in scores. David decides to carry out a formal test to validate his hunch regarding the difference in average scores. In a random sample of 18 students in the first section, he computes a mean and a standard deviation of 77.4 and 10.8, respectively. In the second section, a random sample of 14 students results in a mean of 74.1 and a standard deviation of 12.2.

a. Construct the null and the alternative hypotheses to test David's hunch.

b. Compute the value of the test statistic. What assumption regarding the populations is necessary to implement this step?

c. Implement the test at α = 0.01 and interpret your results.

Reference no: EM131807287

Questions Cloud

Discuss the uses of the cost of production report : Discuss the uses of the cost of production report and the results of part

What are her responsibilities as the buyer : What standard must she prove? What are her responsibilities as the buyer? Is Alice required to give Bill notice of the breach?

Calculate the degree of operating leverage : Compute the number of units that must be sold to achieve a target after-tax incomeof $120,000, assuming a tax rate of 40%.

Manufacturing line for packaging materials : A firm has installed a manufacturing line for packaging materials. The firm plans to produce 50 tons of packing peanuts at $5000 per ton annually for 5 years

Compute the value of the test statistic : David Anderson has been working as a lecturer at Michigan State University for the last three years. He teaches two large sections of introductory accounting.

What were country as government purchases : What were country A's government purchases in 2010? What were country A's exports and imports in 2010? What was the net export in 2010?

Georgia institute of technology : Contributed by Hamed Kashani, Saeid Sadri, and Baabak Ashuri, Georgia Institute of Technology

Social media-pros-cons please share three reasons : Social Media - Pros/Cons Please share three (3) reasons you believe all first graders should have a cell phone at public/charter schools.

Essay - Ensuring tourism is sustanable in great britain : Assessment Essay - write a well-structured essay. It must be sufficiently detailed for you to use as the map of how you are going to write your essays

User Account

All Pages