User Account

All Pages

Estimate of the proportion of items returned

Assignment Help Basic Statistics
Reference no: EM13236908

According to the University of Nevada Center for Logistics Management, 6% of all merchandise sold in the United States gets returned (BusinessWeek, January 15, 2007). A Houston department store sampled 80 items sold in January and found that 12 of the items were returned.

a. Construct a point estimate of the proportion of items returned for the population of sales transactions at the Houston store.

b. Construct a 95% confidence interval for the porportion of returns at the Houston store.

c. Is the proportion of returns at the Houston store significantly different from the returns for the nation as a whole? Provide statistical support for your answer.

Reference no: EM13236908

Questions Cloud

Prepare a report for the dean of the college : Develop 95% confidence intervals for the proportion of all students, the proportionof male students, and the proportion of female students who were involved in sometype of cheating.
What would total compensation have been in billions : Suppose that in this economy the fraction of total output in a sector that is paid to labor is the same as the fraction paid to labor in the United States. When output was $300 billion (in constant dollars), what would total compensation have been..
What is the potential difference between the plates : A point charge q = ?2.3 nC is initially at rest adjacent to the negative plate of a capacitor, What is the potential difference between the plates
Why was 40 percent discount offered only after the rejection : "I see that your shoes are ‘buy one, get one free - limit one free pair per customer.' Will you sell me one pair for half-price" The clerk answered, "I can't do that." When the customer started to leave the store, the clerk hastily offered,
Estimate of the proportion of items returned : Construct a point estimate of the proportion of items returned for the population of sales transactions at the Houston store and construct a 95% confidence interval for the porportion of returns at the Houston store.
Calculate the heat lost from the cylinder : A vertical cylinder 6 ft tall and 1 ft in diameter might be used to approximate a man for heat-transfer purposes, Calculate the heat lost from the cylinder
Explain why postal service is seeking a rate increase : In 2009, the US Postal Service increased first-class postage rates from 42 cents to 44 cents. The service had been losing money. One of the reasons is increased competition from companies such as United Parcel Service and Federal Express.
Explain the oxidation number of cobalt : For [Co(en)(NH3)2Cl2]ClO4 identify the coordination number of cobalt, the coordination geometry for cobalt, the oxidation number of cobalt, the number of unpaired electrons
What are the short- and long-term economic benefits : 1.-What are the short- and long-term economic benefits and cost associated with our current high federal government budget deficits 2.-Do you think the economic benefits outweigh the economic cost, why or why not

Reviews

Write a Review

Basic Statistics Questions & Answers

  Calculate blpha risk-true population mean

Using this information, calculate Blpha risk (probability of Type II error) if the true population mean really is 79.

  Find probability of producing more than three faulty chips

Using suitable probability model, calculate the probability of producing more than 3 faulty chips per hour.Explain the reasons for choosing your probability model.

  Find probability that patient is diagnosed as hypokalemic

Judy's measured potassium level varies according to the Normal distribution with mean = 3.8. If a single potassium measurement is made, what is the probability that Judy is diagnosed as hypokalemic?

  Advantages and limitations of simple linear regression model

Why is estimating a multiple regression model just as easy as bivariate regression?

  Find probability that all the bulbs selected are good ones

The bin with replacement, find the probability that all the bulbs selected are good ones. Round to the nearest thousandth if necessary.

  Question-chi square test for independence

A recent study by a large retailer designed to determine whether there was a relationship between the importance a store manager placed on advertising and the size of the store revealed the following sample information:

  Chi-square test for independent of attributes

Chi-square test for independent of attributes - A random sample of students is interviewed to determine if there is an association between class and attitude toward corporations?

  Confidence interval-balance of defaulted loans

A federal bank examiner is interest in estimating the mean outstanding defaulted loans balance of all defaulted loans over the last three years. Calculate a 90% confidence interval for the mean balance of defaulted loans over the past three years.

  How to test the claim that true mean of process is different

Sample is found to have a mean of 80.6,a standard deviation of 1.4 test the claim that the true mean of this process is different than 80. use 10% level of significance.

  How many of each product should be produced for profit

Using the below information in a linear programing problem maximize the profit for product A and B. Provide how many of each product should be produced and what is the profit at that level?

  Conclude that mean daily expenses are greater for staff

At the .10 significance level, can she conclude that the mean daily expenses are greater for the sales staff than the audit staff? What is the p-value?

  What is a 95% confidence interval for the odds ratio

What is the intercept for the logistic regression equation and What is a 95% confidence interval for the odds ratio

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