Homework Help is Here – Start Your Trial Now!
Math
Statistics
Q.1 At the end of every school year, the state administers a reading test to a sample of 36 third graders. The school system has 20,000 third graders, half boys and half girls. The results from last year's test are shown in the table below. Stratum Boys Girls Mean score 80 70 Standard deviation 10.27 6.66 This year, the researchers plan to use a stratified sample, with one stratum consisting of boys and the other, girls. Use the results from last year to answer the following questions? • To maximize precision, how many sampled students should be boys and how many should be girls? . What is the mean reading achievement level in the population? Compute the confidence interval. . Find the margin of error.

Q.1 At the end of every school year, the state administers a reading test to a sample of 36 third graders. The school system has 20,000 third graders, half boys and half girls. The results from last year's test are shown in the table below. Stratum Boys Girls Mean score 80 70 Standard deviation 10.27 6.66 This year, the researchers plan to use a stratified sample, with one stratum consisting of boys and the other, girls. Use the results from last year to answer the following questions? • To maximize precision, how many sampled students should be boys and how many should be girls? . What is the mean reading achievement level in the population? Compute the confidence interval. . Find the margin of error.

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section11.4: Collecting Data
Problem 3E
See similar textbooks
icon
Related questions
Question
Q.1 At the end of every school year, the state administers a reading test to a sample of 36 third graders. The school system has 20,000 third graders, half boys and half girls. The results from last year's test are shown in the table below. Stratum Boys Girls Mean score 80 70 Standard deviation 10.27 6.66 This year, the researchers plan to use a stratified sample, with one stratum consisting of boys and the other, girls. Use the results from last year to answer the following questions? . To maximize precision, how many sampled students should be boys and how many should be girls? . What is the mean reading achievement level in the population? Compute the confidence interval. . Find the margin of error.
Transcribed Image Text:Q.1 At the end of every school year, the state administers a reading test to a sample of 36 third graders. The school system has 20,000 third graders, half boys and half girls. The results from last year's test are shown in the table below. Stratum Boys Girls Mean score 80 70 Standard deviation 10.27 6.66 This year, the researchers plan to use a stratified sample, with one stratum consisting of boys and the other, girls. Use the results from last year to answer the following questions? . To maximize precision, how many sampled students should be boys and how many should be girls? . What is the mean reading achievement level in the population? Compute the confidence interval. . Find the margin of error.
Expert Solution
steps

Step by step

Solved in 3 steps with 3 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Recommended textbooks for you
Holt Mcdougal Larson Pre-algebra: Student Edition…
Holt Mcdougal Larson Pre-algebra: Student Edition…
Algebra
ISBN:
9780547587776
Author:
HOLT MCDOUGAL
Publisher:
HOLT MCDOUGAL
Glencoe Algebra 1, Student Edition, 9780079039897…
Glencoe Algebra 1, Student Edition, 9780079039897…
Algebra
ISBN:
9780079039897
Author:
Carter
Publisher:
McGraw Hill
College Algebra (MindTap Course List)
College Algebra (MindTap Course List)
Algebra
ISBN:
9781305652231
Author:
R. David Gustafson, Jeff Hughes
Publisher:
Cengage Learning
SEE MORE TEXTBOOKS