nalysis Name: Date: Score: Section Exercise 10.3 1. SJS Company has been selling to retail customers in the Metro Manila area. They advertise extensively on radio, print ads, and in the internet. The owner would like to review the relationship between the amount spent on advertising expense (in P000s) and sales (in P000s). Below is information on advertising expense and sales for the last 9 months. Month Jan Advertising Expense 10 Sales Revenue Feb Mar Apr May June July Aug Sept 8 12 11 13 190 215 190 210 235 208 15 14 13 16 170 175 250 Find the coefficient of correlation. Determine at the 0.10 significance level whether the correlation in the population is greater than zero. Step 1: State the hypotheses. Ho: Hi: Step 2: The level of significance and critical region. a= Step 3: Complete the table and compute for the value of r and t. and tcritical = Month x x 22 x2 xy Jan Feb Mar Apr May Jun Jul Aug Sept Σχ= Σy= ΣΥ Σαν = Σx=- tcomputed= r = Step 4: Decision rule. Step 5: Conclusion. Chapter 10: Correlation and Regression Analysis Page 307 Name: Date: Section Exercise 10.3 Score: 2. AUS Rural Bank is studying the relationship between the mean account balance for individual accounts and the number of transactions per month. A sample of eight accounts revealed: 5 6 7 8 4 Customer 1 2 3 Mean Balance (P000s) 27 No. of Transactions 11 32 2 50 29 24 53 10 16 15 7 2 4 10 5 Name: 1. A used car price. Listed Car Age Selli Find the coefficient of correlation. Determine at the 0.01 significance level whether the correlation in the population is greater than zero. Step 1: State the hypotheses. Ho: Determine significanc Solution: Step 1: State t Ho: Hi: Step 2: The level of significance and critical region. a= Step 3: Complete the table and compute for the value of r and t. Customer 1 2 3 4 5 6 7 I 8 Στο Σχ= Συ= ΣY= r = Step 4: Decision rule. Step 5: Conclusion. Page 308 x² Hi: and tcritical = Step 2: The Step 3: Dete Step 4: Con Σxy => tcomputed = Step 5: Step 6 Chapter 10: Correlation and Regression Analysis Chapt

nalysis Name: Date: Score: Section Exercise 10.3 1. SJS Company has been selling to retail customers in the Metro Manila area. They advertise extensively on radio, print ads, and in the internet. The owner would like to review the relationship between the amount spent on advertising expense (in P000s) and sales (in P000s). Below is information on advertising expense and sales for the last 9 months. Month Jan Advertising Expense 10 Sales Revenue Feb Mar Apr May June July Aug Sept 8 12 11 13 190 215 190 210 235 208 15 14 13 16 170 175 250 Find the coefficient of correlation. Determine at the 0.10 significance level whether the correlation in the population is greater than zero. Step 1: State the hypotheses. Ho: Hi: Step 2: The level of significance and critical region. a= Step 3: Complete the table and compute for the value of r and t. and tcritical = Month x x 22 x2 xy Jan Feb Mar Apr May Jun Jul Aug Sept Σχ= Σy= ΣΥ Σαν = Σx=- tcomputed= r = Step 4: Decision rule. Step 5: Conclusion. Chapter 10: Correlation and Regression Analysis Page 307 Name: Date: Section Exercise 10.3 Score: 2. AUS Rural Bank is studying the relationship between the mean account balance for individual accounts and the number of transactions per month. A sample of eight accounts revealed: 5 6 7 8 4 Customer 1 2 3 Mean Balance (P000s) 27 No. of Transactions 11 32 2 50 29 24 53 10 16 15 7 2 4 10 5 Name: 1. A used car price. Listed Car Age Selli Find the coefficient of correlation. Determine at the 0.01 significance level whether the correlation in the population is greater than zero. Step 1: State the hypotheses. Ho: Determine significanc Solution: Step 1: State t Ho: Hi: Step 2: The level of significance and critical region. a= Step 3: Complete the table and compute for the value of r and t. Customer 1 2 3 4 5 6 7 I 8 Στο Σχ= Συ= ΣY= r = Step 4: Decision rule. Step 5: Conclusion. Page 308 x² Hi: and tcritical = Step 2: The Step 3: Dete Step 4: Con Σxy => tcomputed = Step 5: Step 6 Chapter 10: Correlation and Regression Analysis Chapt

Algebra: Structure And Method, Book 1

(REV)00th Edition

ISBN:9780395977224

Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole

Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole

Chapter2: Working With Real Numbers

Section2.3: Rules For Addition

Problem 8P

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