Construct and interpret the confidence interval

Reference no: EM131405156

In testing the heat resistance of electrical components, safety engineers for an appliance manufacturer routinely subject wiring connectors to a temperature of 450 degrees Fahrenheit, then record the amount of time it takes for the connector to melt and cause a short circuit. Past experience has shown the standard deviation of failure times to be 6.4 seconds.

In a simple random sample of 40 connectors from a very large production run, the mean time until failure was found to be 35.5 seconds.

Construct and interpret the 99% confidence interval for μ = the mean time until failure for all of the connectors from the production run.

Reference no: EM131405156

Questions Cloud

How health insurance premiums in the us traditionally : Introduction to Health Economics Periodic Assignment. Would such a proposal be superior to how health insurance premiums in the US traditionally have been set

Write an introduction about germany labour management : Write an introduction about Germany and Australia's Labour management relations.

Construct the confidence interval : If the process standard deviation is known to be σ = 0.25 grams, construct the 95% confidence interval for μ = the average amount of cheese being injected by the machine.

What is the confidence interval for the average torque : A simple random sample of 35 nuts is selected, and the average torque to which they have been tightened is 150 lb-ft. What is the 95% confidence interval for the average torque being applied during the assembly process?

Construct and interpret the confidence interval : Construct and interpret the 99% confidence interval for μ = the mean time until failure for all of the connectors from the production run.

Construct confidence intervals for population mean : For a simple random sample of ten patients who have recently had knee surgery, the scores are as follows: 101, 92, 94, 88, 52, 93, 76, 84, 72, and 98. Construct and interpret the 90% and 95% confidence intervals for the population mean.

Evaluate the organization on the concept of repeatable work : How would you evaluate the organization on the concept of "repeatable work? What recommendations would you have to standardize the manufacturing process

What potential sources of financing are available to company : What is the maximum amount of additional financing that can be in the form of bank borrowings (notes payable)? What other potential sources of financing are available to the company?

Interpret the confidence intervals for the population mean : The sample mean has been calculated as 342.0, and the sample standard deviation is s 14.9. Construct and interpret the 95% and 99% confidence intervals for the population mean.

User Account

All Pages