A skincare company conduct a marketing research on its newest facial moisturizer pr MoistyChic. This study measures the effectiveness of the new moisturizer compared to tl moisturizer that had previously been on the market. Thirty people were randomly assigned to independent groups of 10. At the beginning of the study, 2 (two) people from the control grou 1 (one) person from the old moisturizer group withdrew as samples. More detailed information the research results can be seen in the table below. New Old Moisturizer Moisturizer Control Group

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Author:Amos Gilat
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A skincare company conduct a marketing research on its newest facial moisturizer product,
MoistyChic. This study measures the effectiveness of the new moisturizer compared to the old
moisturizer that had previously been on the market. Thirty people were randomly assigned to three
independent groups of 10. At the beginning of the study, 2 (two) people from the control group and
1 (one) person from the old moisturizer group withdrew as samples. More detailed information from
the research results can be seen in the table below.
New
Old
Moisturizer
Moisturizer
Control Group
81
48
18
32
31
49
42
25
33
62
22
19
37
30
24
44
30
17
38
32
48
47
15
22
49
40
41
Transcribed Image Text:A skincare company conduct a marketing research on its newest facial moisturizer product, MoistyChic. This study measures the effectiveness of the new moisturizer compared to the old moisturizer that had previously been on the market. Thirty people were randomly assigned to three independent groups of 10. At the beginning of the study, 2 (two) people from the control group and 1 (one) person from the old moisturizer group withdrew as samples. More detailed information from the research results can be seen in the table below. New Old Moisturizer Moisturizer Control Group 81 48 18 32 31 49 42 25 33 62 22 19 37 30 24 44 30 17 38 32 48 47 15 22 49 40 41
Is there a significant difference between the three groups at the 1% significance level?
Explain your answer.
Transcribed Image Text:Is there a significant difference between the three groups at the 1% significance level? Explain your answer.
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