Company claim that the mean life and standard deviation

Assignment Help Operation Management

Reference no: EM13964679

Please need the answer step by step with formula to understand the solution.

A company claim that the mean life and standard deviation of the bulbs are 360 hours and 90 hours respectively. A sample of 625 bulbs is chosen. It is found that the mean life and standard deviation of the bulb in the sample are 355 hour and 90 hours respectively. Use these results to test the claim at the 5% level of significance

Reference no: EM13964679

Questions Cloud

Develop a point estimate of the price for a sleeping bag : Data on x = temperature rating (F°) and y = price ($) for 11 sleeping bags manufactured by Bergans of Norway provided the estimated regression equation ÿ = 359.2668 - 5.2772x. For these data s = 37.9372.

Assume that the company uses absorption costing : Assume that the company uses absorption costing:a. Compute the unit product cost. b. Prepare an income statement for the year.

Do paper make contribution to body of scientific literature : Originality -does this paper make a contribution to body of scientific literature -does it tell us sth didnt know before -learn sth?

Enough evidence to support the claim : The Pew Research Center claims that more than 55% of American adults regularly watch a network news broadcast. You decide to test this claim and ask a random sample of 425 Americans whether they regularly watch a network news broadcast. Of the 425 Am..

Company claim that the mean life and standard deviation : A company claim that the mean life and standard deviation of the bulbs are 360 hours and 90 hours respectively. A sample of 625 bulbs is chosen. It is found that the mean life and standard deviation of the bulb in the sample are 355 hour and 90 hours..

Moon is considering two options to increase its capacity : Moon Micro is a small make- to order manufacturer of servers that currently builds its entire product in Santa Clara, California. The current demand and capacity are 10,000 servers per year. The annualized fixed cost is $15,000,000. As the market for..

Find the pressure if the temperature i increased to 500 c. : At a temperature of 20 C, how many kilomoles can be withdrawn from the tank before the pressure falls to 10% of the original pressure?

Confidence for the true population mean : The size of the sample used is 120 guests and the resort desires a precision of plus or minus .5 nights. What is the standard error of the mean in the lakefront resort example? Within what range below can the resort expect with 95% confidence for ..

Calculate x-ray intensity as function of incident intensity : In figure, calculate the X-ray intensity, as a function of the incident intensity I_o, that reaches the film for each of the three X-ray beams. The dark-shaded area represents bone and the light-shaded area represents tissue. The linear attenuatio..

User Account

All Pages