What is the point estimate for the population mean

Assignment Help Operation Management

Reference no: EM13221669

The mean lifetime of all light bulbs produced by a manufacturer is unknown. A sample of 144 bulbs is randomly selected and tested. The average lifetime of this group is measured and found to be 1500 hours with a sample standard deviation of 120 hours.

What is the point estimate for the population mean?
Construct the 99% confidence interval estimate for the true population mean.

Reference no: EM13221669

Questions Cloud

State nitrogen fertilizer that is manufactured from ammonia : a nitrogen fertilizer that is manufactured from ammonia and carbon dioxide. 2 NH3(g) CO2(g) ? NH2CONH2(aq) H2O(l) What volume of ammonia at 45°C and 1.60 atm is needed to produce 908 g (2 lb) of urea?

Evaluate the molecular weight of the solute : A 4.305-gram sample of a nonelectrolyte is dissolved in 105 grams of water. The solution freezes at -1.23°C. Calculate the molecular weight of the solute. Kf for water = 1.86°C/m.

Find the probability that exactly four people approve : According to the recent CNBC and the Wall Street Journal poll, 40% of the American public approves of the way the President of the United States is handling his job. Take a random sample of n = 10 Americans. And let X equal the number who gives ap..

What is the point estimate for the population mean : Company is packaged and sold with unknown weight and standard deviation. Seven packages are randomly selected and weighed with the following results in pounds.

What is the point estimate for the population mean : The mean lifetime of all light bulbs produced by a manufacturer is unknown. A sample of 144 bulbs is randomly selected and tested. The average lifetime of this group is measured and found to be 1500 hours with a sample standard deviation of 1..

Determine what is the probability of the outcome : If five tickets are purchased, (0, 0, 0, 1, 0) is a possible observed sequence in which the 4th ticket is a winner and the other four are losers. Assuming independence among winning and losing tickets, what is the probability of this outcome

Describe the vapor pressure of a solution : Calculate the vapor pressure of a solution prepared by dissolving 70.0 g of naphthalene, C10H8 (a nonvolatile nonelectrolyte), in 220.0 g of benzene, C6H6, at 20°C. Assume the solution is ideal. The vapor pressure of pure benzene is 74.6 torr at 2..

Describe the vapor pressure of pure propyl chloride : The vapor pressure of pure propyl chloride is 347 torr at 25°C and that of pure propyl bromide is 133 torr at 25°C. Assume that the solution is an ideal solution.

How would be break down the scenario in economic terms : Economic Decision whether to stay out of town or spent the night. The town is 150 miles from my house which takes 2.5 hours of drive time. The hotel cost $119.00 per night. While I will have 5 hours my time value is $25.00 per hour of non-producti..

User Account

All Pages