What is the mean of the sample mean lifetime

Assignment Help Operation Management
Reference no: EM131113810

The lifetime of light bulbs produced by a particular manufacturer have a mean of 1,200 hours and a standard deviation of 400 hours. The population distribution is normal. Suppose that you purchase nine bulbs, which can be regarded as a random sample from the manufacturer’s output.

a) What is the mean of the sample mean lifetime?

b) What is the variance of the sample mean?

c) What is the standard deviation of the sample mean?

d) What is the probability that, on average, those time light bulbs have lives of fewer than 1,050 hours?

Reference no: EM131113810

Discuss the liability of each party and the potential amount

As a result, Ralph sues to recover damages and names Kotaku, LP, Bob, Carol, Ted, Alice, and Nick in the lawsuit. Discuss the liability of each party and the potential amoun

Organizational Issues and CRM

Organizational Issues and CRM- Discuss the major advantages and disadvantages from a CRM perspective of the following types of organization structure - functional, geographic,

Differences between these deeds as they would affect right

Wiley and Gemma are neighbors. Wiley’s lot is extremely large, and his present and future use of it will not involve the entire area. Gemma wants to build a single-car garage

Summarize strategic performance improvement process

Summarize the strategic performance improvement measuring process and how this process would apply to the industrial setting. Can the process include quality, OSH, and environ

Damage to goods being transported

May a bailment exist without any verbal or written communication between the bailor and bailee? Is a common carrier liable for all loss and or damage to goods being transporte

Strategic options in competing against global challengers

“Comment on the following statement: ‘We cannot afford to terminate the project now. We have already spent more than 50 percent of the project budget.’” Identify and briefly d

Product should be manufactured to maximize profits

Andrew McCarroll is trying to determine how many units each of two cordless telephones to produce each day. One of these is the standard model; the other one is the deluxe mod

Party to lawsuit but has an interest in the outcome

Someone who is not a party to a lawsuit but has an interest in the outcome and therefore wants to become a party to the suit must: a. await the outcome of this trial and then


Write a Review

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd