Test Statistic = (Round to three decimal places.) P-value = (Round to four decimal places.) Decision: O reject the null hypothesis O fail to reject the null hypothesis O Accept the null hypothesis

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Benford's law states that the probability distribution of the first digits of many items (e.g. populations and expenses) is not uniform, but has the probabilities shown in this table.
Business expenses tend to follow Benford's Law, because there are generally more small expenses than large expenses.
Perform a "Goodness of Fit" Chi-Squared hypothesis test (αα = 0.05) to see if these values are consistent with Benford's Law.
If they are not consistent, it there might be embezzelment.
Complete this table.

X Observed
Frequency
(Counts)
Benford's
Law P(X)
Expected
Frequency
(Counts)
1 11 .301  
2 14 .176  
3 21 .125  
4 9 .097  
5 11 .079  
6 5 .067  
7 6 .058  
8 7 .051  
9 6 .046  
Conclusion:
O There is sufficient evidence to warrant rejection of the claim that these values are consistent with
Benford's Law.
O There is not sufficient evidence to warrant rejection of the claim that these values are consistent
with Benford's Law.
O The sample data supports the claim that these values are consistent with Benford's Law.
There is not sufficient data to support the claim that these values are consistent with Benford's Law.
Enter the critical value, along with the significance level and degrees of freedom x (a,df) below the
graph. (Graph is for illustration only. No need to shade.)
X²- Distribution
0.12
0.1
0.08
0.06
0.04
0.02
五红
X
X2,
Probability
LE
43
29
60T
115
127
133
Transcribed Image Text:Conclusion: O There is sufficient evidence to warrant rejection of the claim that these values are consistent with Benford's Law. O There is not sufficient evidence to warrant rejection of the claim that these values are consistent with Benford's Law. O The sample data supports the claim that these values are consistent with Benford's Law. There is not sufficient data to support the claim that these values are consistent with Benford's Law. Enter the critical value, along with the significance level and degrees of freedom x (a,df) below the graph. (Graph is for illustration only. No need to shade.) X²- Distribution 0.12 0.1 0.08 0.06 0.04 0.02 五红 X X2, Probability LE 43 29 60T 115 127 133
The sum of the observed frequencies is 90.
Ho: P1 = .301, P2 = .176, P3 = .125, P4 = .097, p5 = .079, P6 = .067, P7 = .058, ps = .051, Pg = .046
H1: at least one is different
Original Claim:
O Ho
OH:
Test Statistic =
(Round to three decimal places.) P-value =
(Round to four decimal places.) Decision:
O reject the null hypothesis
Ofail to reject the null hypothesis
O Accept the null hypothesis
Transcribed Image Text:The sum of the observed frequencies is 90. Ho: P1 = .301, P2 = .176, P3 = .125, P4 = .097, p5 = .079, P6 = .067, P7 = .058, ps = .051, Pg = .046 H1: at least one is different Original Claim: O Ho OH: Test Statistic = (Round to three decimal places.) P-value = (Round to four decimal places.) Decision: O reject the null hypothesis Ofail to reject the null hypothesis O Accept the null hypothesis
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