MAT-240-T5270 Applied Statistics 18EW5 Lisa Pirtiaho 6/27/18 9:35 PM Homework: 8
ID: 3371020 • Letter: M
Question
MAT-240-T5270 Applied Statistics 18EW5 Lisa Pirtiaho 6/27/18 9:35 PM Homework: 8-2 MyStatLab: Module Eight Problem Set Score: 2.33 of 7 pts Save 4 of 10 (10 complete) 12.1.13-T HW Score: 85.9%, 55 83 of 65 pts The first significant digit in any number must be 1, 2. 3, 4 Complete parts (a) and (b) below EEB Click the icon to view the tables , 5, 6, 7, 8, or 9. It was discovered that hi st digi ts do not occur with equal frequency Probabilities of occurrence to the first digit in a number are shown in the accompanying table. The known as Benford's Law For example, the following distribution represents the frst digits in 194 allegedly fraudulent checks writen lo a bogus company by an employse attempting to embezale funds from hs emplover distribution (a) Using the level of significance a o10, test whether the first digits in the allegedly traudulent checks obey Benford's Law. What is the null hypothesis? OA. Ho The distribution of the first digits in the allegedly fraudulent checks do not obey Benford's Law Distnibution of First Digts B. Ho The distribution ot the first digits in the allegedly fraudulent checks obey Benfords Law O c. None of these What is the alternative hypothesis? Full data set Distribution of first d git Probabili A H1 The distribution ot the first digits in the allegedly traudulent checks obey Benford's Law dc. None of these What is the test statistic? r = l (Round to three decimal places as needed ) 0.176 H1 The distribution of the first digits in the allegedly fraudulent checks do not obey Benford's Law Probabili 0.067 0046 First digits in allegedly fraudulent checks First digit Frequency 36 32 28 20 23 17 15 PrintDone nter your answer in the answer box and then click Check Answer parts remainingExplanation / Answer
The statistical software output for this problem is:
Chi-Square goodness-of-fit results:
Observed: Oi
Expected: Ei
Hence,
Test statistic = 19.883
N DF Chi-Square P-value 194 8 19.883051 0.0108Related Questions
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