STAT 101-Find the expected frequency for the given Contingency
Subject: Mathematics / Statistics
Question
Find the expected frequency for the given Contingency Table, where the Observed frequency is 88 and 10. Use a 0.05 significance level to test the claim that getting an infection (cold) is independent of the treatment group. What does the result indicates about the effectiveness of Echinacea as a treatment for colds?
Treatment Group
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Placebo
Echinacea:20%extract
Echinacea:60%extract
Infected
88
48
42
Not Infected
15
4
10
