Given the 5 categories in the table below, test the claim that the categories are equally likely to be selected at a α = 0.05 significance level. Observed Category Frequency 13 A B C D E 17 22 11 5 Expected Frequency a. Complete the table by calculating the expected frequencies. b. What is the chi-square test statistic? Round to three decimal places. x² = c. What are the degrees of freedom? d.f.- d. What is the p-value for this sample? Round to four decimal places. p-value= e. Is the p-value less than a?? f. Make a decision. Select an answer g. Make a conclusion. O There is sufficient evidence to warrant rejection of the claim that all 5 categories are equally likely to be selected. There is not sufficient evidence to warrant rejection of the claim that all 5 categories are equally likely to be selected. The sample data support the claim that all 5 categories are equally likely to be selected. There is not sufficient sample evidence to support the claim that all 5 categories are equally likely to be selected

MATLAB: An Introduction with Applications
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Chapter1: Starting With Matlab
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Given the 5 categories in the table below, test the claim that the categories are equally likely to be
selected at a a = 0.05 significance level.
Category
A
B
с
D
E
Observed
Frequency
13
17
22
11
5
Expected
Frequency
a. Complete the table by calculating the expected frequencies.
b. What is the chi-square test statistic? Round to three decimal places.
x²=
c. What are the degrees of freedom?
d.f.=
d. What is the p-value for this sample? Round to four decimal places.
p-value =
e. Is the p-value less than a??
f. Make a decision.
Select an answer
g. Make a conclusion.
O There is sufficient evidence to warrant rejection of the claim that all 5 categories are equally
likely to be selected.
There is not sufficient evidence to warrant rejection of the claim that all 5 categories are
equally likely to be selected.
The sample data support the claim that all 5 categories are equally likely to be selected.
There is not sufficient sample evidence to support the claim that all 5 categories are equally
likely to be selected.
Transcribed Image Text:Given the 5 categories in the table below, test the claim that the categories are equally likely to be selected at a a = 0.05 significance level. Category A B с D E Observed Frequency 13 17 22 11 5 Expected Frequency a. Complete the table by calculating the expected frequencies. b. What is the chi-square test statistic? Round to three decimal places. x²= c. What are the degrees of freedom? d.f.= d. What is the p-value for this sample? Round to four decimal places. p-value = e. Is the p-value less than a?? f. Make a decision. Select an answer g. Make a conclusion. O There is sufficient evidence to warrant rejection of the claim that all 5 categories are equally likely to be selected. There is not sufficient evidence to warrant rejection of the claim that all 5 categories are equally likely to be selected. The sample data support the claim that all 5 categories are equally likely to be selected. There is not sufficient sample evidence to support the claim that all 5 categories are equally likely to be selected.
Expert Solution
Step 1

In categorical data, there are k classes with observed frequency O and expected frequency E. The test statistic U has an approximate chi-square distribution with k-1 degrees of freedom. The test statistic is given by the following formula

U=O-E2E

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