Homework Help is Here – Start Your Trial Now!
Math
Statistics
2. A swimming school claimed that the average seven-year-old would be able to swim across an Olympic-sized pool in less than 2 minutes (120 seconds) after taking lessons from their instructors. To test this claim, a consumer psychologist arranged for eight randomly selected seven-year-old children to take lessons at the school and recorded how long it took each child to swim across a pool at the end of the lessons. The times (in seconds) were 60, 120, 110, 80, 70, 90, 100, and 130. What conclusion would the psychologist draw following at test for a single sample using 120 seconds as the "known" population mean and the .05 significance level? Use the five steps of hypothesis testing and calculate effect size. Note that I gave you scores instead of Sum of Squares (SS). You will have to calculate this yourself. Step 1: Null and Research Hypothesis Step 2: Create your comparison distribution Participant X (X-M)² 1 60 1225 625 2 120 110. 225 80 -15 225 70 90 100 130 760 3 4 5 6 7 8 SUM X-M +35 25 Step 5: Decision كل оимийти 25 35 Step 3: Determine your Critical Values Step 4: Calculate your t Score 23 25 1223 4200 Step 6: Calculate Effect Size 760 8 S 45 Meas 5:24-49

2. A swimming school claimed that the average seven-year-old would be able to swim across an Olympic-sized pool in less than 2 minutes (120 seconds) after taking lessons from their instructors. To test this claim, a consumer psychologist arranged for eight randomly selected seven-year-old children to take lessons at the school and recorded how long it took each child to swim across a pool at the end of the lessons. The times (in seconds) were 60, 120, 110, 80, 70, 90, 100, and 130. What conclusion would the psychologist draw following at test for a single sample using 120 seconds as the "known" population mean and the .05 significance level? Use the five steps of hypothesis testing and calculate effect size. Note that I gave you scores instead of Sum of Squares (SS). You will have to calculate this yourself. Step 1: Null and Research Hypothesis Step 2: Create your comparison distribution Participant X (X-M)² 1 60 1225 625 2 120 110. 225 80 -15 225 70 90 100 130 760 3 4 5 6 7 8 SUM X-M +35 25 Step 5: Decision كل оимийти 25 35 Step 3: Determine your Critical Values Step 4: Calculate your t Score 23 25 1223 4200 Step 6: Calculate Effect Size 760 8 S 45 Meas 5:24-49

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
See similar textbooks
icon
Related questions
Question
Homework+5+%28Ch+7%29 2. A swimming school claimed that the average seven-year-old would be able to swim across an Olympic-sized pool in less than 2 minutes (120 seconds) after taking lessons from their instructors. To test this claim, a consumer psychologist arranged for eight randomly selected seven-year-old children to take lessons at the school and recorded how long it took each child to swim across a pool at the end of the lessons. The times (in seconds) were 60, 120, 110, 80, 70, 90, 100, and 130. What conclusion would the psychologist draw following a t test for a single sample using 120 seconds as the "known" population mean and the .05 significance level? Use the five steps of hypothesis testing and calculate effect size. Note that I gave you scores instead of Sum of Squares (SS). You will have to calculate this yourself. Step 1: Null and Research Hypothesis Step 2: Create your comparison distribution Participant X (X-M)² 1 1225 2 625 3 4 5 6 7 8 SUM X-M 60 +35 120 25 110 80 70 90 100 130 760 كل Step 5: Decision -15 25 -5 5 35 0 Step 4: Calculate your t Score Step 3: Determine your Critical Values 225 225 525 23 25 1223 Step 6: Calculate Effect Size 4200 760 8 > 95 Meas S:14.49 2 5
Transcribed Image Text:Homework+5+%28Ch+7%29 2. A swimming school claimed that the average seven-year-old would be able to swim across an Olympic-sized pool in less than 2 minutes (120 seconds) after taking lessons from their instructors. To test this claim, a consumer psychologist arranged for eight randomly selected seven-year-old children to take lessons at the school and recorded how long it took each child to swim across a pool at the end of the lessons. The times (in seconds) were 60, 120, 110, 80, 70, 90, 100, and 130. What conclusion would the psychologist draw following a t test for a single sample using 120 seconds as the "known" population mean and the .05 significance level? Use the five steps of hypothesis testing and calculate effect size. Note that I gave you scores instead of Sum of Squares (SS). You will have to calculate this yourself. Step 1: Null and Research Hypothesis Step 2: Create your comparison distribution Participant X (X-M)² 1 1225 2 625 3 4 5 6 7 8 SUM X-M 60 +35 120 25 110 80 70 90 100 130 760 كل Step 5: Decision -15 25 -5 5 35 0 Step 4: Calculate your t Score Step 3: Determine your Critical Values 225 225 525 23 25 1223 Step 6: Calculate Effect Size 4200 760 8 > 95 Meas S:14.49 2 5
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 3 steps with 3 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
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
SEE MORE TEXTBOOKS