
The estimate the population value using the 99% confidence level
Given Information:
A random sample of 260 workers in a highrise office building revealed that 30% were very satisfied with the quality of elevator service.
Formula used:
Confidence interval for a sample proportion (large sample) is given by,
Calculation:
The value of statistic at 99% level of significance is given as,
Substitute
Essentials of Statistics for The Behavioral Sciences (MindTap Course List)
Calculus: An Applied Approach (MindTap Course List)
Precalculus: Mathematics for Calculus (Standalone Book)
Calculus: Early Transcendental Functions
Calculus: Early Transcendentals
Multivariable Calculus
Single Variable Calculus: Early Transcendentals, Volume I
Applied Calculus
Finite Mathematics and Applied Calculus (MindTap Course List)
Statistics for The Behavioral Sciences (MindTap Course List)
Calculus (MindTap Course List)
Understanding Basic Statistics
Probability and Statistics for Engineering and the Sciences
Intermediate Algebra
Finite Mathematics
Applied Calculus for the Managerial, Life, and Social Sciences: A Brief Approach
Single Variable Calculus
Elements Of Modern Algebra
Mathematical Excursions (MindTap Course List)
Elementary Technical Mathematics
Contemporary Mathematics for Business & Consumers
Trigonometry (MindTap Course List)
Mathematical Applications for the Management, Life, and Social Sciences
Elementary Geometry For College Students, 7e
Calculus of a Single Variable
Finite Mathematics for the Managerial, Life, and Social Sciences
Calculus: Early Transcendental Functions (MindTap Course List)
Single Variable Calculus: Early Transcendentals
Introduction To Statistics And Data Analysis
Elementary Geometry for College Students
Study Guide for Stewart's Multivariable Calculus, 8th
Study Guide for Stewart's Single Variable Calculus: Early Transcendentals, 8th
Research Methods for the Behavioral Sciences (MindTap Course List)
Statistics for Business & Economics, Revised (MindTap Course List)
Research Methods for the Behavioral Sciences (MindTap Course List)
STATISTICS F/BUSINESS+ECONOMICSTEXT
Mathematics For Machine Technology
Multivariable Calculus
College Algebra (MindTap Course List)
Calculus (MindTap Course List)
Essentials Of Statistics For Business & Economics
Functions and Change: A Modeling Approach to College Algebra (MindTap Course List)
Mathematics: A Practical Odyssey
Discrete Mathematics With Applications
Introductory Statistics
Modern Business Statistics with Microsoft Office Excel (with XLSTAT Education Edition Printed Access Card) (MindTap Course List)
College Algebra
A First Course in Differential Equations with Modeling Applications (MindTap Course List)