Give a 95 percent lower confidence interval

Reference no: EM13902114

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). Suppose the results of 10 independent measurements of this fish are

11.2, 12.4, 10.8, 11.6, 12.5, 10.1, 11.0, 12.2, 12.4, 10.6

(a) Give a 95 percent confidence interval for the PCB level of this fish.

(b) Give a 95 percent lower confidence interval.

Reference no: EM13902114

Questions Cloud

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.

Core activities of a typical human resources department : core activities of a typical human resources department in health care organizations?

User Account

All Pages