Confidence Interval: Breaking Strengths of Cables
Not what you're looking for?
The breaking strengths of cables produced by a certain manufacturer have a standard deviation of 82 pounds. A random sample of 150 newly manufactured cables has a mean breaking strength of 1950 pounds. Based on this sample, find a 95% confidence interval for the true mean breaking strength of all cables produced by this manufacturer. Then complete the table below.
Carry your intermediate computations to at least three decimal places. Round your answers to one decimal place.
What is the lower limit of the 95% confidence interval?
What is the upper lint of the 95% confidence interval?
Purchase this Solution
Solution Summary
In this solution, the 95 % confidence interval for the breaking strengths of cables is determined. The lower confidence limit and upper confidence limit are calculated for the data. The solution is enclosed within an attached Word document.
Solution Preview
Please see the attached file for the complete solution.
Thanks for using BrainMass.
Statistics, All Topics
Other
Confidence interval for the population mean: Use of the standard normal
________________________________________
The breaking strengths of cables ...
Purchase this Solution
Free BrainMass Quizzes
Measures of Central Tendency
This quiz evaluates the students understanding of the measures of central tendency seen in statistics. This quiz is specifically designed to incorporate the measures of central tendency as they relate to psychological research.
Terms and Definitions for Statistics
This quiz covers basic terms and definitions of statistics.
Measures of Central Tendency
Tests knowledge of the three main measures of central tendency, including some simple calculation questions.
Know Your Statistical Concepts
Each question is a choice-summary multiple choice question that presents you with a statistical concept and then 4 numbered statements. You must decide which (if any) of the numbered statements is/are true as they relate to the statistical concept.