Logo
Home Study Material Contact Search
AI Chat FREE
  1. mathematics
  2. statistics
  3. for each of the following you should decide a) wha

For each of the following you should decide a) What test would you use? b) Why would...

80.2K

Verified Solution

Question

Statistics

For each of the following you should decide
a) What test would you use?
b) Why would you use this test?

  1. You wonder if changing the format on a statistics test willchange the average mark on the test. You randomly select half theclass and give them the standard test. The other half receives thetest with the new format. You then compare the marks for each half.In analyzing the data you notice that the group that got thestandard test has a normal distribution but the new format hascreated a bimodal distribution in that half of the class.

  2. You wonder which gas station has better service Petro Canada orShell. Over a 10 day period you ask 30 people to visit the PetroCanada and the Shell station. Each person purchases exactly $10worth of gas at one station then drives across the road and gets$10 at the other station. You then record the time it takes foreach person to be served.

  3. You want to see if Rec and Leisure students get summer jobsfaster than other university students. You find out from thestudent placement service that the average university student getsa summer job in 4 weeks with a variance of 3 weeks. The average Recand Leisure student gets a job in 3.6 weeks with a variance of 4.2weeks.

Answer & Explanation Solved by verified expert
3.9 Ratings (387 Votes)
1 a Here we can use the ttest for the difference of means b The reason we use this test here is that the two group averages ie the one with standard test and the other with new format need to be compared with respect to their average marks in order to determine whether the change in format will also change their scores So we use the null hypothesis that the average    See Answer
Get Answers to Unlimited Questions

Join us to gain access to millions of questions and expert answers. Enjoy exclusive benefits tailored just for you!

Membership Benefits:
  • Unlimited Question Access with detailed Answers
  • Zin AI - 3 Million Words
  • 10 Dall-E 3 Images
  • 20 Plot Generations
  • Conversation with Dialogue Memory
  • No Ads, Ever!
  • Access to Our Best AI Platform: Flex AI - Your personal assistant for all your inquiries!
Become a Member

Other questions asked by students

Q

(2x−y3−yex)dx=(2+ex+3xy2 )dy, y(0)=2. Solve the initial value problem and verify exact.

Basic Math
Q

What are the strengthens and weaknesses of the Big Five traits

Psychology
Q

prove that if a set A is countably infinite and B is a superset of A,...

Advance Math
Q

An equation for the line tangent to the graph of f(x) = 4x + 5...

Basic Math
Q

Let f x 5 x 4 6 Then f x 35x 40 x 30 2...

Calculus
Q

What is the parent function of f(x) = (x-20) - 3?(x-20)(x-3)x

Algebra
Q

Anita Kaur runs a courier service in downtown Seattle. She charges clients $0.60 per mile...

Accounting
Q

This problem requires you to research the disclosure requirements for fixed assets using the FASB...

Accounting
Q

Normal No Spacing assumptions iPhone 8 Phone XPs IPhone 8 IPhone 7 Sales price (base...

Accounting
Q

Appendix: Normal and Abnormal Spoilage Cuero Company produces leather strips for western belts using three...

Accounting
Q

Safety First Security Systems' bank reconciliation follows Safety First Secunty Systems bank...

Accounting
Q

The following cost and inventory data are taken from the accounting records of Mason Company...

Accounting