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An educator wants to construct a 90% confidence interval for the true proportion of California school children who are proficient in reading. Suppose that of a simple random sample of 500 California school children, 70% were proficient in reading. We are interested in the number that were proficient in reading. a) what parameter are we estimating? μ X b) What is the point estimate of that parameter? p c) What is a success for this problem? not proficient in reading d) How many successes were there? e) Find the margin of error for a 90% confidence interval, rounded to the 5th. Use your T-table for this. vX X f) Round to the fourth. We are 90% confident that the true proportion of California school children that are proficient in reading is between and

An educator wants to construct a 90% confidence interval for the true proportion of California school children who are proficient in reading. Suppose that of a simple random sample of 500 California school children, 70% were proficient in reading. We are interested in the number that were proficient in reading. a) what parameter are we estimating? μ X b) What is the point estimate of that parameter? p c) What is a success for this problem? not proficient in reading d) How many successes were there? e) Find the margin of error for a 90% confidence interval, rounded to the 5th. Use your T-table for this. vX X f) Round to the fourth. We are 90% confident that the true proportion of California school children that are proficient in reading is between and

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter4: Equations Of Linear Functions
Section: Chapter Questions
Problem 8SGR
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An educator wants to construct a 90% confidence interval for the true proportion of California school children who are proficient in reading. Suppose that of a simple random sample of 500 California school children, 70% were proficient in reading. We are interested in the number that were proficient in reading. a) what parameter are we estimating? u ✓X b) What is the point estimate of that parameter? p c) What is a success for this problem? not proficient in reading ✓X d) How many successes were there? e) Find the margin of error for a 90% confidence interval, rounded to the 5th. Use your T-table for this. ✓X f) Round to the fourth. We are 90% confident that the true proportion of California school children that are proficient in reading is between and
Transcribed Image Text:An educator wants to construct a 90% confidence interval for the true proportion of California school children who are proficient in reading. Suppose that of a simple random sample of 500 California school children, 70% were proficient in reading. We are interested in the number that were proficient in reading. a) what parameter are we estimating? u ✓X b) What is the point estimate of that parameter? p c) What is a success for this problem? not proficient in reading ✓X d) How many successes were there? e) Find the margin of error for a 90% confidence interval, rounded to the 5th. Use your T-table for this. ✓X f) Round to the fourth. We are 90% confident that the true proportion of California school children that are proficient in reading is between and
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