In the past, when elementary school children in a large city were screened, 25% were found to have auditory defects. In a recent study of 200 children in the city who had been screened within the past month, 63 were found to have such defects. Do these data suggest a significant increase in the propor of children having auditory defects? Test at a = 0.10. Round your answers to three decimal places, a round any interim calculations to four decimal places.

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
In the past, when elementary school children in a large city were screened, 25% were found to have auditory defects. In a recent study of 200 children in the city who had been screened within the past month, 63 were found to have such defects. Do these data suggest a significant increase in the proportion of children having auditory defects? Test at \(\alpha = 0.10\). Round your answers to three decimal places, and round any interim calculations to four decimal places.

What is the test statistic?

[Blank space for answer]
Transcribed Image Text:In the past, when elementary school children in a large city were screened, 25% were found to have auditory defects. In a recent study of 200 children in the city who had been screened within the past month, 63 were found to have such defects. Do these data suggest a significant increase in the proportion of children having auditory defects? Test at \(\alpha = 0.10\). Round your answers to three decimal places, and round any interim calculations to four decimal places. What is the test statistic? [Blank space for answer]
Expert Solution
steps

Step by step

Solved in 2 steps

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