User Account

All Pages

Construct a 95 confidence interval estimate of the

Assignment Help Basic Statistics
Reference no: EM13583719

The quality control manager at a light globe factory needs to estimate the mean life of a large shipment of energy-saving compact light globes. The historical standard deviation of light globe life is 250 hours. A random sample of 64 light globes indicates a sample mean life of 7,940 hours.

(a) Construct a 95% confidence interval estimate of the population mean life of light globes in this shipment.

(b) Do you think that the manufacturer has the right to state that the light globes last an average of 8,000 hours? Explain.

(c) Must you assume that the population of light globe life is normally distributed? Explain.

(d) Suppose that the standard deviation changes to 180 hours. What are your amended answers in parts (a) and (b)?

Reference no: EM13583719

Questions Cloud

Gravity affects any object that has mass does gravity : gravity affects any object that has mass. does gravity affect light rays? a beam of light emitted from a distant star
Two point charges are located on the x axis the first is a : two point charges are located on the x axis. the first is a charge q at x -a. the second is an unknown charge located
Identify and discuss what aspects of these two documents : question 1 identify and discussnbspthe stakeholder groups affected by both of these documents andthe emerging business
Cases in the past 15 years or so where corporations have : corporate ethics and fraud have received much media attention through reporting of scandals at major corporations. you
Construct a 95 confidence interval estimate of the : the quality control manager at a light globe factory needs to estimate the mean life of a large shipment of
A bridge is constructed of a material that is known to : a bridge is constructed of a material that is known to expand 0.1 cm for eeach meter in length when subjected to a
A 270 gram sample of an unknown hydrocarbon is burned in : 1 a 27.0 gram sample of an unknown hydrocarbon is burned in exess oxygen to form 88.0 grams of carbon dioxide and 27.0
Prepare entries in general journal form to record the : prepare entries in general journal form to record the following transactions in general fund general ledger accounts
Aproton in the upper atmosphere moves at 88times105 ms : a proton in the upper atmosphere moves at 8.8times105 ms perpendicular to earths magnetic field which at that point

Reviews

Write a Review

Basic Statistics Questions & Answers

  Statistics-probability assignment

MATH1550H: Assignment:  Question:  A word is selected at random from the following poem of Persian poet and mathematician Omar Khayyam (1048-1131), translated by English poet Edward Fitzgerald (1808-1883). Find the expected value of the length of th..

  What is the least number

MATH1550H: Assignment:  Question:     what is the least number of applicants that should be interviewed so as to have at least 50% chance of finding one such secretary?

  Determine the value of k

MATH1550H: Assignment:  Question:     Experience shows that X, the number of customers entering a post office during any period of time t, is a random variable the probability mass function of which is of the form

  What is the probability

MATH1550H: Assignment:Questions: (Genetics) What is the probability that at most two of the offspring are aa?

  Binomial distributions

MATH1550H: Assignment:  Questions:  Let’s assume the department of Mathematics of Trent University has 11 faculty members. For i = 0; 1; 2; 3; find pi, the probability that i of them were born on Canada Day using the binomial distributions.

  Caselet on mcdonald’s vs. burger king - waiting time

Caselet on McDonald’s vs. Burger King - Waiting time

  Generate descriptive statistics

Generate descriptive statistics. Create a stem-and-leaf plot of the data and box plot of the data.

  Sampling variability and standard error

Problems on Sampling Variability and Standard Error and Confidence Intervals

  Estimate the population mean

Estimate the population mean

  Conduct a marketing experiment

Conduct a marketing experiment in which students are to taste one of two different brands of soft drink

  Find out the probability

Find out the probability

  Linear programming models

LINEAR PROGRAMMING MODELS

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!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +1-415-670-9521

Phone: +1-415-670-9521

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

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