How do states stack up against each other in a standardized test? To compare the scores from two different states, state 1 and state 2, random samples of 100 students from each state were selected and their scores recorded with the following results. Sample Size Standard Deviation State Mean state 1 1,123 100 193 state 2 1,057 100 169 (a) Find a point estimate for the difference in mean test scores for state 1 and state 2. (Use state 1 – state 2.) What is the 95% margin of error for the point estimate you found? (Round your answer to three decimal places.) (b) Find a 95% confidence interval estimate for the difference in mean test scores for these two states. (Use state 1 – state 2. Round your answers to three decimal places.) to
How do states stack up against each other in a standardized test? To compare the scores from two different states, state 1 and state 2, random samples of 100 students from each state were selected and their scores recorded with the following results. Sample Size Standard Deviation State Mean state 1 1,123 100 193 state 2 1,057 100 169 (a) Find a point estimate for the difference in mean test scores for state 1 and state 2. (Use state 1 – state 2.) What is the 95% margin of error for the point estimate you found? (Round your answer to three decimal places.) (b) Find a 95% confidence interval estimate for the difference in mean test scores for these two states. (Use state 1 – state 2. Round your answers to three decimal places.) to
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:How do states stack up against each other in a standardized test? To compare the scores from two different states, state 1 and state 2, random samples of 100 students
from each state were selected and their scores recorded with the following results.
Sample
Size
Standard
Deviation
State
Mean
state 1
1,123
100
193
state 2
1,057
100
169
(a) Find a point estimate for the difference in mean test scores for state 1 and state 2. (Use state 1 – state 2.)
What is the 95% margin of error for the point estimate you found? (Round your answer to three decimal places.)
(b) Find a 95% confidence interval estimate for the difference in mean test scores for these two states. (Use state 1 – state 2. Round your answers to three decimal
places.)
to
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