Homework Answers
ans ) a ) here we will use the test chi square test for goodness of fit because we are checking here distribution of types
b ) H0 :the five types are equally popular
H1 : the five types are not equally popular
c )
Using category names in Type
Contribution
type Observed Expected to Chi-Sq
1 25 20 1.25
2 19 20 0.05
3 15 20 1.25
4 17 20 0.45
5 24 20 0.80
total 100
N DF Chi-Sq P-Value
100 4 3.8 0.434
the test statistic is 3.80
d ) p value is 0.43
e ) since p value is greater than 0.10 so we will accept the null hypothesis and conclude that the five types are equally popular.
f ) yes, there is sufficient evidence to conclude that the five types are equally popular
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