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Chi Square Tes

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Subject
Statistics
Type
Homework
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Q.A researcher is examining preferences among four new flavors of ice cream. A sample of n =
80 people is obtained. Each person tastes all four flavors and then picks a favorite. The
distribution of preferences is as follows. Do these data indicate any significance preferences
among the four flavors? Test at the .05 level of significance.
Answer:
Formulate the Null and Alternative Hypotheses
The chi-square test for goodness of fit uses sample data to test hypotheses about the shape of
population distribution. The test determines how well the obtained sample proportions fit the
population proportions specified by the null hypothesis.
A
B
C
D
Observed
Frequencies
12
18
28
22
Expected
Frequencies
20
20
20
20
Null hypothesis: the null hypothesis assumes that there is no significant difference
between the observed and the expected value.
43210
:
===H
Alternative hypothesis: the alternative hypothesis assumes that there is a
significant difference between the observed and the expected value.
43211
:
H

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Q.A researcher is examining preferences among four new flavors of ice cream. A sample of n = 80 people is obtained. Each person tastes all four flavors and then picks a favorite. The distribution of preferences is as follows. Do these data indicate any significance preferences among the four flavors? Test at the .05 level of significance. Answer: Formulate the Null and Alternative Hypotheses The chi-square test for goodness of fit uses sample data to test hypotheses about the shape of population distribution. The test determines how well the obtained sample proportions fit the population propo ...
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