Answered step by step
Verified Expert Solution
Link Copied!

Question

1 Approved Answer

A common assumption is that old age effects memory.To test this assumption, volunteer participants were randomly selected from different age groups, 25, 45, 65, and

A common assumption is that old age effects memory.To test this assumption, volunteer participants were randomly selected from different age groups, 25, 45, 65, and 85 and given a battery of memory tasks to complete.Memory scores were computed and are provided below.The scores below reflect the number of errors on the memory tasks.Thus, a high score reflects more memory difficulties and a low score reflects good memory task completion. Compute the appropriate test to determine if age has an impact on memory.

25 year olds 45 year olds 65 year olds 85 year olds
0 9 3 2
4 7 2 2
2 9 4 4
5 5 5 3
6 7 1 4
2 8 3 5
4 12 4 2
3 8 5 3
  1. What statistical test will you use and why?
  2. What is your computed answer?
  3. What probability level should you use and why?
  4. What is your degrees of freedom?
  5. Will you reject or fail to reject the null hypothesis? Why?
  6. What would be the best way to write if you were writing it for a journal article?
  7. What does your answer tell you about the relationship between age and memory performance? Be specific. If there are differences between groups, indicate how you know which differences are significant.
  8. If you made an error, was it Type I or Type II? Explain why.

Step by Step Solution

There are 3 Steps involved in it

Step: 1

blur-text-image

Get Instant Access to Expert-Tailored Solutions

See step-by-step solutions with expert insights and AI powered tools for academic success

Step: 2

blur-text-image

Step: 3

blur-text-image

Ace Your Homework with AI

Get the answers you need in no time with our AI-driven, step-by-step assistance

Get Started

Recommended Textbook for

Calculus Early Transcendentals

Authors: James Stewart, Daniel K. Clegg, Saleem Watson, Lothar Redlin

9th Edition

1337613924, 978-1337613927

More Books

Students also viewed these Mathematics questions

Question

Explain why it is not wise to accept a null hypothesis.

Answered: 1 week ago

Question

Defi ne HR planning and outline the HR planning process. LO1

Answered: 1 week ago