Basic Business Statistics
14th Edition
ISBN: 9780134684840
Author: BERENSON, Mark L., Levine, David M., Szabat, Kathryn A.
Publisher: Pearson,
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Textbook Question
Chapter 18, Problem 14CRP
A survey was conducted on the characteristics of households in the United States. The data (Which have been altered from an actual study to preserve the anonymity of the respondents) are stored in Households. The variables are gender, age, Hispanic origin, type of dwelling, age of dwelling in years, living at dwelling, number of bedrooms, numbers of vehicles kept at dwelling, fuel type at dwelling, feel type at dwelling, monthly cost of fuel of dwelling
Analyze these data and prepare a report describing your conclusions.
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Customers experiencing technical difficulty with their Internet cable service may call an 800 number for technical support. It takes the technician between 30 seconds and 11 minutes to resolve the problem. The distribution of this support time follows the uniform distribution.
Required:
a. What are the values for a and b in minutes?
Note: Do not round your intermediate calculations. Round your answers to 1 decimal place.
b-1. What is the mean time to resolve the problem?
b-2. What is the standard deviation of the time?
c. What percent of the problems take more than 5 minutes to resolve?
d. Suppose we wish to find the middle 50% of the problem-solving times. What are the end points of these two times?
Chapter 18 Solutions
Basic Business Statistics
Ch. 18 - In many manufacturing processes, the term...Ch. 18 - Many factors determine the attendance at Major...Ch. 18 - Prob. 3CRPCh. 18 - Prob. 4CRPCh. 18 - Prob. 5CRPCh. 18 - The file Euro Tourism 2 contains a sample of 28...Ch. 18 - The file Philly contains a sample of 25...Ch. 18 - Prob. 8CRPCh. 18 - The file UsedCars contains attributes of cars that...Ch. 18 - A study was conducted to determine whether any...
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