Conduct the test using alpha using significance level

Reference no: EM13151370

A state university uses thousands of flourescent light bulbs each year. The brand of bulb it currently uses has a mean life of 800 hours. A competitor claims that its bulb, which cost the same as the brand the university uses, have a mean life of more than 800 hours. The university has decided to purchase the new brand if, when tested, the evidence supports the manufactuer claim at the .05 significance level. Suppose 49 bulbs were tested with the folowing results: x-bar = 827.5 hours, s= 70 hours. Conduuct the test using alpha=.05.

Reference no: EM13151370

Questions Cloud

Sufficient reason to conclude population standard deviation : The sample variance was s^2=16.0. does the sample show sufficient reason to conclude that the population standard deviation is not equal to 3 at the 0.05 level of significance? use the p-value method.

What is the mass in grams of the lead : The density of lead is 11.3 g/ml . The water level in a graduated cylinder initially at 217 ml rises to 286 ml after a piece of lead is submerged. What is the mass in grams of the lead?

Critical functions of real-world financial managers : Reading and understanding an organization's financial statements and accurately interpreting the information provided therein is an integral part of financial management. By analyzing and presenting on Arcadia Hospital's financial statements, stud..

What is the final temperature of the system : A 585 g piece of copper tubing is heated to 97.2°C and placed in an insulated vessel containing 51.0 g of water at 26.0°C.

Conduct the test using alpha using significance level : The evidence supports the manufactuer claim at the .05 significance level. Suppose 49 bulbs were tested with the folowing results: x-bar = 827.5 hours, s= 70 hours. Conduct the test using alpha=.05.

Determine penguin taxable income and current ep : Penguin purchased seven-year MACRS property in the current year for $80,000. No?179 election was made. The property has a 10-year ADR midpoint life. Determine Penguin's taxable income and current E&P.

Does a colectomy correct the phenotype or the genotype : Chelsea, age 14, recently had a colectomy. Her colon was lined with thousands of polyps. Pathology reported that these polyps were adenomas and a diagnosis of familial adenomatous polyposis (FAP) was made.

Compute the corresponding entropy for each state : calculate the number of microstates, W, that have this energy. Make sketches of these microstates. Calculate the corresponding entropy for each state.

Calculate [cu2+] in equilibrium : 5 ml of 0.05 M CuSO4 solution was mixed with 5 ml of 3 M NH3 solution.Calculate [Cu2+] in equilibrium with Cu(NH3)4^2+. Experimentally the cell potential was found to be 0.387

User Account

All Pages