How many hours should all bulbs be simultaneously replaced

Assignment Help Basic Computer Science

Reference no: EM131236492

A particular brand of light bulbs is used in a large manufacturing plant. This brand is known to have a normally distributed life with a mean of 3600 h and a standard deviation of 160 h. After how many hours should all of the bulbs be simultaneously replaced to ensure that no more than 10% of the bulbs fail while in use?

Reference no: EM131236492

Questions Cloud

What are your major assumptions in these calculations : In a test measuring the life span of a certain brand of tire, 100 tires are tested. The results showed an average lifetime of 50,000 miles, with a standard deviation of 5000 miles. One hundred thousand of these tires have been sold and are on the ..

Describe the question associated with your chosen case study : Analyze the questions associated with your chosen case study and discuss them using concepts you learned in this course. Explain your rationale for each of your answers to your chosen case study.

Determine the values of rb1 and rc1 : Assume vX = vY = vZ = logic 1 and assume two similar type load circuits are connected to the output. The transistor Q2 is biased in saturation with iB2 = 0.1 mA and iC2 = 0.2 mA. Determine the values of RB1 and RC1.

Effects of the fifteenth amendment : This is African American history since 1877. What were the origins and effects of the fifteenth amendment and the enforcement acts? 250 words with at least one accredited source. Need today if possible.

How many hours should all bulbs be simultaneously replaced : After how many hours should all of the bulbs be simultaneously replaced to ensure that no more than 10% of the bulbs fail while in use?

Weapons of mass destruction and overthrow saddam hussein : It Began in march 2003 to rid Iraq of weapons of mass destruction and overthrow Saddam Hussein. After the overthrow, longstanding religious-ethnic disputes came out. Sunni, Shi'a, and Kurds all fought. ISIS is a new threat that emerged in the powe..

Do you think that might change based on the reading : Reflect on your own instructional practice and discuss whether you consult research before designing and implementing instruction for/in your classes. If so, what research-based best practice strategies have you adopted and did you find success in..

Estimate the standard deviation of the mean value : Calculate the mean and standard deviation for the sample, and estimate the standard deviation of the mean value

Determine the confidence interval on the mean weight : To determine the confidence interval on the mean weight of filled buttercups, 40 samples are measured and found to have a mean value of 8 oz and a standard deviation of 0.2 oz. Determine the confidence interval on the mean weight of buttercups wit..

User Account

All Pages