User Account

All Pages

Population mean expenditure for males

Assignment Help Basic Statistics
Reference no: EM131954401

The USA Today reports that the average expenditure on Valentine's Day is $100.89. Do male and female consumers differ in the amounts they spend? The average expenditure in a sample survey of 48 male consumers was $135.67, and the average expenditure in a sample survey of 32 female consumers was $68.64. Based on past surveys, the standard deviation for male consumers is assumed to be $33, and the standard deviation for female consumers is assumed to be $20.

  1. What is the point estimate of the difference between the population mean expenditure for males and the population mean expenditure for females (to 2 decimals)?
  2. At 99% confidence, what is the margin of error (to 2 decimals)?
  3. Develop a 99% confidence interval for the difference between the two population means (to 2 decimals). Use z-table link above.

Reference no: EM131954401

Questions Cloud

What is store owner null hypothesis : After the ad campaign, the owner took a random sample of forty-five days and found that daily average sales had increased to $2,984.
What has been written about the issue : what has been written about the issue. The challenge(s) that the issue presents in the staffing process. Strategies used by organizations to deal with issue.
Apply the same measurement? technique : If the? subject's blood pressure remains constant and the medical students correctly apply the same measurement? technique
Write a report based upon the case study : BUSN20017 Effective Business Communication - write a report based upon the case study and then present an oral presentation
Population mean expenditure for males : What is the point estimate of the difference between the population mean expenditure for males and the population mean expenditure for females
Describe and discuss at least two backup strategies : Much has been made of the new Web 2.0 phenomenon, including social networking sites and user-created mash-ups.
What would do to make your team members excited about work : What would you do to make your team members excited about the work? Find some examples of each type of motivator, and which is more powerful for leaders to use?
How are venture capital partnerships structured : Why is outside capital often necessary? Explain the difference between angel investors and venture capitalists. How are venture capital partnerships structured?
Briefly discuss the delphi technique : Wuestion: Define and briefly discuss the following brainstorming techniques, the delphi technique, brainstorming, or nominal group technique.

Reviews

Write a Review

Basic Statistics Questions & Answers

  Define the alternative hypothesis

Consider a multinomial experiment with n = 400 and k = 3. The null hypothesis is H0: p1 = 0.60, p2 = 0.25, and p3 = 0.15.

  What does statistically insignificant mean

What does "statistically insignificant" mean? Why is it important that the effects were small in size as well as insignificant

  Random-stratified-systematic-cluster-convenience

Identify and justify which type of sampling (random, stratified, systematic, cluster, convenience) is used in the following examples.

  Charge per policy-holder to break even

What would the insurance company have to charge per policy-holder to break even? (i.e., what the premium would have to be in order to have an expected profit of zero.) Round to the nearest dollar.

  Contrast fascism and nazism and rise

Compare and contrast fascism and Nazism and their rise. Why might one be more effective than the other at attracting support?

  Describe the format of a linear regression equation

Describe the format of a linear regression equation for estimating the dollar amount of the order on the basis of the other variables described above. If any qualitative variables are used, indicate the strategy for coding them.

  Did the bowl size change the selected portion size

Test an appropriate hypothesis and state your conclusions. For assumptions and conditions that you cannot test, you may assume that they are sufficiently satisfied to proceed.

  Identify the probable gender of the author

Read the following document and identify the probable gender of the author, citing textual evidence for your conclusions.

  Calculate the standard error

In a random sample of 1000 adults aged 18 to 25, 590 individuals said that they drink alcohol at least once a month.- Calculate the standard error of P^.

  Construct confidence interval based on a normal distribution

Given the results of the two tests in parts a and b, is it appropriate to construct a confidence interval based on a normal distribution with a population.

  What is the benefits of large country and small country

Small country: A country in which import demand is larger than domestic demand. So what is the benefits of large country and small country?

  A random sample of 90 students at a private high school is

a researcher is interested in whether students who attend private high schools have higher average sat scores than

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