A science teacher claims that the mean scores on a science assessment test for girls are equal. The mean score for 18 randomly selected boys is 153 with a standard de mean score for 20 randomly selected girls is 149 with a standard deviation of 30. At a teacher's claim? Assume the populations are normally distributed and the variance are your work must include a filled out standardized test statistic formula. You may not us formula for this problem. + n₁ n₂ df= (s²/n₁) ²³ (s²/n₂)² + 2-1 n₂-1

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
Question
7.
A science teacher claims that the mean scores on a science assessment test for fourth grade boys and
girls are equal. The mean score for 18 randomly selected boys is 153 with a standard deviation of 23 and the
mean score for 20 randomly selected girls is 149 with a standard deviation of 30. At a-0.01, can you reject the
teacher's claim? Assume the populations are normally distributed and the variance are not equal. For credit,
your work must include a filled out standardized test statistic formula. You may not use the following df
formula for this problem.
2
df=
+
¯ (s² / m₂)³²_ (s² / m₂)³²
n,
+
n₁-1
1₂-1
Transcribed Image Text:7. A science teacher claims that the mean scores on a science assessment test for fourth grade boys and girls are equal. The mean score for 18 randomly selected boys is 153 with a standard deviation of 23 and the mean score for 20 randomly selected girls is 149 with a standard deviation of 30. At a-0.01, can you reject the teacher's claim? Assume the populations are normally distributed and the variance are not equal. For credit, your work must include a filled out standardized test statistic formula. You may not use the following df formula for this problem. 2 df= + ¯ (s² / m₂)³²_ (s² / m₂)³² n, + n₁-1 1₂-1
Expert Solution
steps

Step by step

Solved in 4 steps with 2 images

Blurred answer
Similar questions
  • SEE MORE 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