bserved Frequencies: GENDER DRINK Male Female Total Tea 20 50 70 Coffee 10 40 50 Total 30 90 120 ill the below table of Expected Frequencies: GENDER DRINK Male Female Total Tea 70 Coffee 50 Total 30 90 120

MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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A social scientist wants to determine whether preference of tea or coffee is independent of gender. She randomly selects 120 people and gathered the data summarized in the table below.
Observed Frequencies:
GENDER
DRINK
Male
Female Total
Tea
20
50
70
Coffee
10
40
50
Total
30
90
120
Fill the below table of Expected Frequencies:
GENDER
DRINK
Male
Female
Total
Tea
70
Coffee
50
Total
30
90
120
Calculate the Chi-square test statistic:
What is the cut-off value if a = 0.01:
What is your conclusion:
Transcribed Image Text:A social scientist wants to determine whether preference of tea or coffee is independent of gender. She randomly selects 120 people and gathered the data summarized in the table below. Observed Frequencies: GENDER DRINK Male Female Total Tea 20 50 70 Coffee 10 40 50 Total 30 90 120 Fill the below table of Expected Frequencies: GENDER DRINK Male Female Total Tea 70 Coffee 50 Total 30 90 120 Calculate the Chi-square test statistic: What is the cut-off value if a = 0.01: What is your conclusion:
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