Purchase Solution

Construction of Confidence Intervals

Not what you're looking for?

Ask Custom Question

A sample of 100 cans of coffee showed an average weight of 13 ounces. The population standard deviation is 0.8 ounces.
a. Construct a 95% confidence interval for the mean of the population.
b. Construct a 95.44% confidence interval for the mean of the population.
c. Discuss why the answers in parts a and b are different.

Purchase this Solution
Solution Summary

This solution provides calculations for constructing confidence intervals.

Purchase this Solution
Free BrainMass Quizzes
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.

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.

Measures of Central Tendency

Tests knowledge of the three main measures of central tendency, including some simple calculation questions.

Terms and Definitions for Statistics

This quiz covers basic terms and definitions of statistics.

View More Free Quizzes
Related BrainMass Solutions

  • Estimation and Confidence Intervals

    Confidence interval =Mean+/- 1.96standard error Standard error= 2.44/sqrt40=.39 =6.05+1.96*.39 and 6.05-1.96*.39 Thus the confidence intervals are of the misspelled words are 6.81 and 5.29 This explains the construction of Estimation and Confidence

  • Confidence interval with graphs and excel

    Please see the attachments Construction of confidence interval for population parameter is discussed in the answer. Excel template for each problem is also included. This template can be used to obtain the answers of similar problems.

  • Determining Confidence Intervals

    522839 Determining Confidence Intervals In a recent study of 86 working adults, the mean number of hours per week spent talking on the phone was 21.6. The sd= 5.7 hours. Calculate the 90% confidence level for the mean.

  • Confidence interval for mean using PH stat

    Newt somehow feels that the use of one of his construction crews is not proving as profitable as other crews when sent out on a job.

  • Confidence interval for mean

    72.13406008 Result Sample Size Needed 73 Construction of confidence interval for population mean is discussed in the answer.

  • Construction of confidence intervals and proper interpretation

    283067 Construction of confidence intervals and proper interpretation Confidence Intervals: A confidence interval is simply a finite interval of score values on the dependent variable.

  • Confidence interval for mean of breaking strength

    The solution gives the details for the construction of confidence intervals for mean of breaking strength.

  • Confidence Intervals: Time Watching TV

    Find a 95% confidence interval estimate of the average number of hours children spend watching TV. Since the population standard deviation is known, we can use the normal distribution for the construction of CI.

  • Confidence interval for mean

    = [ ] Basics and Confidence Intervals 3 In manufacturing process a random sample of 36 bolts manufactured has a mean length of 3 inches with a standard deviation of .3 inches.

View More Related Solutions