According to the University of Nevada Center for Logistics Management, 12% of all merchandise sold in the United States gets returned. A Houston department store sampled 80 items sold in January and found that 14 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. (to 4 decimals) b. Construct a 99% confidence interval for the proportion of returns at the Houston store. (to 4 decimals) 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. Since the confidence interval - Select your answer - ♥ 0.12, we conclude that the return rate for the Houston store Select your answer v the U.S. national return rate.

According to the University of Nevada Center for Logistics Management, 12% of all merchandise sold in the United States gets returned. A Houston department store sampled 80 items sold in January and found that 14 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. (to 4 decimals) b. Construct a 99% confidence interval for the proportion of returns at the Houston store. (to 4 decimals) 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. Since the confidence interval - Select your answer - ♥ 0.12, we conclude that the return rate for the Houston store Select your answer v the U.S. national return rate.

Name: According to the University of Nevada Center for Logistics Management
Uploaded: 2024-03-20T07:07:00.000Z
Channel: Bartleby
Description: According to the University of Nevada Center for Logistics Management, 12% of all merchandise sold in the United States getsreturned. A Houston department store sampled 80 items sold in January and found that 14 of the items were returned.a. Constru

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

According to a telephone survey of adults, 86% of homeowners said that owning a home was a good investment, this survey included 1450 homeowners. 1. Construct a 99% confidence interval for the corresponding population proportion. 2. Construct a 97% confidence interval for the corresponding population proportion.
At one large college, 1867 out of the 2500 students surveyed said they plan to take another science class.Find the 95% confidence interval for the proportion of students that said they plan to take another science class. ? % to ? %
36. Flights on time 2016 revisited Will your flight get you to your destination on time? The Bureau of Transportation Statis- tics reported the percentage of flights that were delayed each month from 1994 through June of 2016. Here's a histogram, along with some summary statistics: 50 n270 19.696 s 4.214 40 30 20 %23 10 10 15 20 25 30 Delayed % We can consider these data to be a representative sample of all months. There is no evidence of a time trend (r 0,07). a) Check the assumptions and conditions for inference about the mean. # of Months
In a survey of 3116 adults aged 57 through 85 years, it was found that 86.2% of them used at least one prescription medication. Complete parts (a) through (c) below. a. How many of the 3116 subjects used at least one prescription medication? b. Construct a 90% confidence interval estimate of the percentage of adults aged 57 through 85 years who use at least one prescription medication. c. What do the results tell us about the proportion of college students who use at least one prescription medication? A. The results tell us that there is a 90% probability that the true proportion of college students who use at least one prescription medication is in the interval found in part (b). B. The results tell us that, with 90% confidence, the probability that a college student uses at least one prescription medication is in the interval found in part (b). C. The results tell us that, with 90% confidence, the true proportion of college students who use at…
In a survey, 1000 Grade 7 students were asked if they read storybooks. There were 318 who said Yes. Use 95% confidence interval to determine the population proportion p of all Grade 7 students who read storybooks.a. 29%-35%b. 28%-36%c. 30%-34%
In one city, 27.8% of the 9000 students surveyed said they eat at the school cafeteria. Find the 95% confidence interval for the proportion of students that said they eat at the school cafeteria. Give answer as a percent rounded to one decimal place.
In a survey of 3213 adults aged 57 through 85 years, it was found that 83.9% of them used at least one prescription medication. Complete parts (a) through (c) below. a. how many of the 3213 subjects used at least one prescription medication? b. construct a 90% confidence interval estimate of the percentage of adults aged 57 through 85 years who use at least one prescription medication. c. what do the results tell us about the proportion of college students who use at least one prescription medication?
Use the data attached: 1. In two to three sentences, explain what a confidence interval means(in general), as if you were talking to someone who has not taken statistics. 2. In one to two sentences, explain what this confidence interval means for this particular study.
In a recent survey of 1003 students, 977 of them would like to recommend www.helpyourmath.com to their friends. Construct a 90% confidence interval to estimate the proportion of all students who would recommend www.helpyourmath.com to their friends. Give your answers to three decimals: Submit Question
4. At private college the achievement test is used for advanced study placement. Counselors selected a random sample of 144 students from the college and scored their tests by hand before sending them in for computer processing. For this sample, the mean was 450 and s = 29. Construct a 98% confidence interval for the mean.
A survey of 41 students in grades 4 through 12 found 63% have classroom Wi-Fi access. Find the 99% confidence interval of the population proportion. .
Melissa wants to estimate the proportion of adults in the U.S. who own a gun. To do so, she surveys 45 adults, and finds that 14 own a gun. Construct a 95% confidence interval to estimate the proportion of all adults in the U.S. who own a gun. Write a conclusion sentence.