User Account

All Pages

Formulate the variance of the given bulbs

Assignment Help Basic Statistics
Reference no: EM131684489

Question: The manufacturer of a certain brand of lightbulbs claims that the variance of the lives of these bulbs is 4200 square hours. A consumer agency took a random sample of 25 such bulbs and tested them. The variance of the lives of these bulbs was found to be 5200 square hours. Assume that the lives of all such bulbs are (approximately) normally distributed.

a. Make the 99% confidence intervals for the variance and standard deviation of the lives of all such bulbs.

b. Test at the 5% significance level whether the variance of such bulbs is different from 4200 square hours.

Reference no: EM131684489

Questions Cloud

Write problem statement to address specific health disparity : Write a problem statement to address this specific health disparity. Support your proposed solutions and answers with appropriate references.
Explain the current state of organizations workforce dynamic : Explain the current state of the organization's workforce dynamic. Is its workforce growing? Is it changing? How is it changing and why?
Find the percentages of people with different opinions : Using the 1% significance level, test the null hypothesis that the percentages of people with different opinions are similar for all four regions.
What are the appropriate primary keys in each relation : IT-244 Introduction to Databases Assignment Questions. Consider the Bank database: What are the appropriate primary keys in each relation
Formulate the variance of the given bulbs : Test at the 5% significance level whether the variance of such bulbs is different from 4200 square hours.
What will be your recommendation to the president : If you were the Human Resource Director, how will you resolve this issue and what will be your recommendation to the President?
Why you are interested in the master of social work program : Why you are interested in the Master of Social Work (MSW) program at Walden University and what are your plans after you receive your degree?
Discuss the ethical issues that may be found in health care : Assess common health care leadership issues. Discuss the ethical and legal issues that may be found in the health care organization of your choice.
Does sample provide evidence to reject null hypothesis : One of the products produced by Branco Food Company is Total-Bran Cereal, which competes with three other brands of similar total-bran cereals.

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