Question

In: Statistics and Probability

A​ company's customer service department asks its customers to rate their​ over-the-phone service on a scale...

A​ company's customer service department asks its customers to rate their​ over-the-phone service on a scale of 1–20 immediately after their service has been completed. The company then matches each​ customer's rating with the number of minutes the person waited on hold. The accompanying table shows the ratings and numbers of minutes on hold for 10 randomly selected customers. Complete parts a through c below.

Minutes Rating
1 14
7 12
3 20
8 15
5 13
2 17
5 10
3 17
5 12
2 15

a. Calculate the sample covariance.

b. Calculate the sample correlation coefficient.

c. Describe the relationship between x and y.

Solutions

Expert Solution

orchestra answered 2 years ago
Next > < Previous

Related Solutions

A customer service department asks its customers to rate their​ over-the-phone service on a scale of​...
A customer service department asks its customers to rate their​ over-the-phone service on a scale of​ 1-20 immediately after their service has been completed. The department then matches each​ customer's rating with the number of minutes the person waited on hold. The accompanying table shows the ratings and number of minutes on hold for 10 randomly selected customers. The regression line for the data is (^ is above the Y) Y=16.85-0.15x. Use this information to complete parts a through d....
A mobile phone service provider has three different subscription packages for its customers: Package A: For...
A mobile phone service provider has three different subscription packages for its customers: Package A: For $39.99 per month 450 minutes are provided. Additional minutes are $0.45 per minute. Package B: For $59.99 per month 900 minutes are provided. Additional minutes are $0.40 per minute. Package C: For $69.99 per month unlimited minutes provided. Write a program that calculates a customer’s monthly bill. It should ask which package the customer has purchased and how many minutes were used. It should...
An insurance company has an online help service for its customers. Customer queries that take more...
An insurance company has an online help service for its customers. Customer queries that take more than 5 minutes to resolve are categorized as​ "unsatisfactory" experiences. To evaluate the quality of its​ service, the company takes 10 samples of 100 calls each while the process is under control. p values (n = 100) 0.06 0.14 0.13 0.05 0.16 0.08 0.17 0.04 0.19 0.16 a. calculate the p̄ and Sp values and set up control limits so that future sample p...
what is the role of a company's salesforce in creating value for customers and building customer...
what is the role of a company's salesforce in creating value for customers and building customer relationships.
You are Kathryn Smith , a correspondent in the customer service department at Bradford's Department Store...
You are Kathryn Smith , a correspondent in the customer service department at Bradford's Department Store located at 214 Grant Avenue, Auburn, New York 13021. This morning (use today's date) you received the following letter from Mrs. Henrietta Daniels, an angry customer. Dear Customer Service Manager, I am really upset at the poor quality shades that you sell. Two months ago I purchased two pairs of your pleated shades in Wedgewood Blue at $35.99 each for my two bathroom windows....
A customer service phone line claims that the wait times before a call is answered by...
A customer service phone line claims that the wait times before a call is answered by a service representative is less than 3.3 minutes. In a random sample of 62 calls, the average wait time before a representative answers is 3.26 minutes. The population standard deviation is assumed to be 0.14 minutes. Can the claim be supported at α=0.08? No, since test statistic is not in the rejection region defined by the critical value, reject the null. The claim is...
A customer service phone line claims that the wait times before a call is answered by...
A customer service phone line claims that the wait times before a call is answered by a service representative is less than 3.3 minutes. In a random sample of 62 calls, the average wait time before a representative answers is 3.24 minutes. The population standard deviation is assumed to be 0.40 minutes. Can the claim be supported at α=0.08?
A department store supervisor is concerned about customer service. To check if this is an issue,...
A department store supervisor is concerned about customer service. To check if this is an issue, the supervisor randomly selected a sample of clerks from stores at three different locations (A, B, C). Then the supervisor records the number of returns associated with each clerk for a month. What can the supervisor conclude with an α of 0.05? A B C 8 10 7 9 11 12 14 10 8 10 7 10 Conduct Tukey's Post Hoc Test for the...
Innovative customer management what are some of the elements of customers service ? Explain how they...
Innovative customer management what are some of the elements of customers service ? Explain how they are measured .Looking at innovation and modernization needs of retail managers,how do customer expectations influence customer satisfaction? Explain how a commitment to customer success is the highest level of customer management.
Problem: Read the following tables and answer the following questions: Customers Customer ID Name Address Phone...
Problem: Read the following tables and answer the following questions: Customers Customer ID Name Address Phone Email 9087 John Doe 204 University Ave. 987-098-9087 [email protected] 2098 Bill Lawrence 123 Jones St 717-387-3387 Business 2398 Laura Smith 0900 West Blvd. 901-234-4567 Information Transactions Customer ID Account Number Date of Last Transaction 9087 375 01/31/98 2098 123 03/09/97 2398 375 09/21/97 2098 375 12/31/97 2398 123 02/01/98 Accounts Account Number Balance Account Type 375 234.45 Checking 123 056.90 Savings 1. Who owns...
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT