A professional marketing survey involves product recognition in New York and California. Of 558 New York residents surveyed, 193 knew the product while 179 out of 614 Californians knew the product. 1. Test the claim that the recognition rates are greater in New York. 2. In which state does the product need the most help with name recognition?
A professional marketing survey involves product recognition in New York and California. Of 558 New York residents surveyed, 193 knew the product while 179 out of 614 Californians knew the product. 1. Test the claim that the recognition rates are greater in New York. 2. In which state does the product need the most help with name recognition?
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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Transcribed Image Text:A professional marketing survey involves product recognition in New York and California. Of 558 New York residents surveyed, 193 knew the product while 179 out of 614 Californians knew the product.
1. Test the claim that the recognition rates are greater in New York.
2. In which state does the product need the most help with name recognition?
Use the given data to compare mean age of residents in Seaside and Marina.
Sample Data
* = 43.2 yr
s = 4.7 yr
n = 97
Seaside
Before
After
1. Test the claim that the mean age of seaside residents is equal to the mean age of Marina residents.
2. How would the result change if we use a = 0.01?
Matched Pairs: Write the alternative hypothesis H₁, for each claim:
1. New engine management software will increase the gas mileage in your car.
2. My coaching will reduce your golf score.
Difference
An instructor gives a test before and after a lesson with these results from randomly selected students
Before and After Data
54
70
=
61
Marina
56
s = 6.7 year
n=78
41.0 year
56
64
41
56
38
39
57
47
1. Test the claim that the lesson is effective in increasing grades
2. Was the intervention effective? Why or why not. Explain in 1 - 2 complete sentences.
42
62
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