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
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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