Logo
Home Study Material Contact Search
AI Chat FREE
  1. mathematics
  2. basic math
  3. a researcher wants to conduct a before/after study

A researcher wants to conduct a before/after study on 12 subjects to determine if a treatment...

70.2K

Verified Solution

Question

Basic Math

A researcher wants to conduct a before/after study on 12subjects to determine if a treatment results in any difference inscores. Scores are obtained on the subjects both before and afterthe treatment. After subtracting the after scores from the beforescores, the average difference is computed to be 3.40 with a samplestandard deviation of 1.21. Assume that the differences arenormally distributed in the population. If the researcher wanted toconstruct a 98% confidence interval for the difference between the(after - before) means, the t value to be used in the computationswill be

A) 2.3027

B) 2.3281

C) 2.6810

D) 2.7181

Answer & Explanation Solved by verified expert
4.0 Ratings (438 Votes)
    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

Basic Math
1.2K views

4 Consider polynomial functions in the form f x ax x Use at least three...

Chemistry
1.2K views

What mass of NaCO3 is required to remove 90% of these ions from10.0L of laundry water? Since...

Advance Math
1.2K views

1. Answer the following questions regarding permutations and combinations. How many different 5-digit octal numbers are there...

Accounting
1.2K views

Would you consider Managerial Accounting and Financial Accounting two different kinds of accounting? Why or why not?

Biology
1.2K views

Gald Lable Using the experimental procedures and data can you determine all statements that are...

Algebra
1.2K views

JNIT 4 HINT what is the probability distribution of each individual event What is the...

Algebra
1.2K views

Synthetic Division Divide 1 3 2v v 2 v 6 A v 3 2 v...

Accounting
1.2K views

The Beechnut Corporation has an Electric Mixer Division and an Electric Lamp Division. Of a...

Accounting
1.2K views

Exercise 13-3 (Algo) Make or Buy Decision [LO13-3] Troy Engines, Limited, manufactures a variety of...

Finance
1.2K views

Nexxus Computers reported the information shown as follows: (Click the icon to view the income...

Accounting
1.2K views

For Swifty Corporation, sales revenue is $2300000, fixed expenses are $880000, and the contribution margin...

Accounting
1.2K views

If a client sells a rental property for a gain and purchases a subsequent rental...