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1. AVS Company has been selling to retail customers in the Pasig City area. They advertis extensively on radio, print ads, and in the internet. The owner would like to review th relationship between the amount spent on advertising expense (in P000s) and sales (i P000s). Below is information on advertising expense and sales for the last 9 months. Month Advertising Expense Sales Revenue Jan Feb Mar Apr May June July Aug Sept 10 14 12 9 13 15 8 13 16 180 170 190 220 235 208 215 175 250

1. AVS Company has been selling to retail customers in the Pasig City area. They advertis extensively on radio, print ads, and in the internet. The owner would like to review th relationship between the amount spent on advertising expense (in P000s) and sales (i P000s). Below is information on advertising expense and sales for the last 9 months. Month Advertising Expense Sales Revenue Jan Feb Mar Apr May June July Aug Sept 10 14 12 9 13 15 8 13 16 180 170 190 220 235 208 215 175 250

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Answer the following problems. Apply the different steps in hypothesis testing. 1. AVS Company has been selling to retail customers in the Pasig City 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 14 9 13 15 8 13 16 12 190 220 235 208 215 175 250 180 170 Find the coefficient of correlation. Determine at the 0.10 significance level whether the correlation in the population is greater than zero.
Transcribed Image Text:Answer the following problems. Apply the different steps in hypothesis testing. 1. AVS Company has been selling to retail customers in the Pasig City 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 14 9 13 15 8 13 16 12 190 220 235 208 215 175 250 180 170 Find the coefficient of correlation. Determine at the 0.10 significance level whether the correlation in the population is greater than zero.
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