Determine a 95 percent confidence interval estimate

Reference no: EM13902115

An electric scale gives a reading equal to the true weight plus a random error that is normally distributed with mean 0 and standard deviation σ = .1 mg. Suppose that the results of five successive weighings of the same object are as follows: 3.142, 3.163, 3.155, 3.150, 3.141.

(a) Determine a 95 percent confidence interval estimate of the true weight.

(b) Determine a 99 percent confidence interval estimate of the true weight.

Reference no: EM13902115

Questions Cloud

Is x a binomial random variable : Let XA and XB denote, respectively, the number of victories against class A and class B teams. What are the distributions of XA and XB ?

Walker purchases a used machine : Prepare journal entries to record depreciation of the machine at December.

Describe how event will impact your work in early childhood : Describe howevents will impact your work in early childhood education

Indicate the balance in the construction in process account : Indicate the balance in the construction in process account on December 31, 2010, 2011, and 2012 (just prior to completion of the contract) under the completed-contract and the percentage-of-completion methods.

Determine a 95 percent confidence interval estimate : An electric scale gives a reading equal to the true weight plus a random error that is normally distributed with mean 0 and standard deviation σ = .1 mg. Suppose that the results of five successive weighings of the same object are as follows: 3..

Give a 95 percent lower confidence interval : The PCB concentration of a fish caught in Lake Michigan was measured by a technique that is known to result in an error of measurement that is normally distributed with a standard deviation of .08 ppm (parts per million- Give a 95 percent conf..

Clearly identify the healthy people 2020 topic chosen : Clearly identify the Healthy People 2020 topic chosen and why this topic was chosen

A normally consolidated clay soil in the field : A normally consolidated clay soil in the field has a compression index of .25. The initial void ratio, was .6 with stress 3000 lb/ft^2. a) Find the void ratio if the stress is increased to 4500 lb/ft^2. b) find the primary consolidation settlement if..

Find 90 percent confidence interval estimate average score : The standard deviation of test scores on a certain achievement test is 11.3. If a random sample of 81 students had a sample mean score of 74.6, find a 90 percent confidence interval estimate for the average score of all students.

User Account

All Pages