Does the data provide significant evidence, at the  4.6% level, that the population mean time for patients diagnosed with schizophrenia exceeds the population mean time for normal individuals by more than 20 points?

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
icon
Related questions
Topic Video
Question

A study of the

differences in cognitive function between normal individuals

and patients diagnosed with schizophrenia was published

in the American Journal of Psychiatry (Apr. 2010).

The total time (in minutes) a subject spent on the Trail

Making Test (a standard psychological test) was used as

a measure of cognitive function. The researchers theorize

that the mean time on the Trail Making Test for schizophrenics

will be larger than the corresponding mean

for normal subjects. The data for independent random

samples of 41 schizophrenics and 49 normal individuals

yielded the following results:

***PHOTO

 

Does the data provide significant evidence,

at the  4.6% level, that the population mean time for patients diagnosed with schizophrenia

exceeds the population mean time for normal individuals by more than 20 points?

Schizophrenia
Normal
Sample size
Mean time
41
104.23
45.45
49
62.24
16.34
Standard deviation
Transcribed Image Text:Schizophrenia Normal Sample size Mean time 41 104.23 45.45 49 62.24 16.34 Standard deviation
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps with 5 images

Blurred answer
Knowledge Booster
Hypothesis Tests and Confidence Intervals for Means
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.
Similar questions
Recommended textbooks for you
MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman