Question 14 Please answer the following set of questions, based on the information provided below. A service company...

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Basic Math

Question 14
Please answer the following set of questions, based onthe information provided below.
A service company is curious to know whether customer age iscrucial in deciding to subscribe. The company has collected arandom sample of 1000 people, and asked everyone whether he or shewould subscribe to the service. The company knows which age groupthe person falls into: under 18 years of age, 18 - 29 years of age,30-45 years of age and 46 years or older. The company decides touse a chi-square test of independence at 0.05 level of significanceto answer its questions. Below are the sampleâ€™s data:
Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â
Under 18
18-29
30-45
46 or older
Total
Yes
160
220
150
120
650
No
70
110
90
80
350
Total
230
330
240
200
1000
What is the degrees of freedom (df) for this test?

	Under 18	18-29	30-45	46 or older	Total
Yes	160	220	150	120	650
No	70	110	90	80	350
Total	230	330	240	200	1000

Answer & Explanation Solved by verified expert

3.8 Ratings (384 Votes)

Here the answer can be stated in below way Before that I would like to have a clear idea about the chisquare test of independence Suppose that Variable A has r levels and Variable B has c levels The null See Answer

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