Spring Semester 2022 Jill Nahorny 05/23/22 6:39 PM ? This test: 50 point(s) E Test: Test 8 Question 7 of 15 possible This question: 2 point(s) possible Submit test The table below summarizes results for randomly selected drivers stopped by police in a recent year. Using technology, the data in the table results in the statistics that follow. Black and Non-Hispanic White and Non-Hispanic Stopped by police 13 231 Not stopped by police 58 993 chi-square statistic = 0.014, degrees of freedom = 1, P-value = 0.906 Use a 0.05 significance level to test the claim that being stopped is independent of race. Based on available evidence, can we conclude that racial profiling is being used? Can we conclude that racial profiling is being used? O A. Yes, because the P-value is less than the significance level. B. No, because the P-value is greater than the significance level. O C. No, because the P-value is less than the significance level. O D. Yes, because the P-value is greater than the significance level. Time Remaining: 02:54:35 NextThis test: 50 point(s) E Test: Test 8 Question 8 of 15 possible This question: 5 point(s) possible Submit test An investigator analyzed the leading digits from 797 checks issued by seven suspect companies. The frequencies were found to be 243, 136, 112, 60, 77, 62, 45 44, and 18, and those digits correspond to the leading digits of 1, 2, 3, 4, 5, 6, 7, 8, and 9, respectively. If the observed frequencies are substantially different from the frequencies expected with Benford's law shown below, the check amounts appear to result from fraud. Use a 0.05 significance level to test for goodness-of-fit with Benford's law. Does it appear that the checks are the result of fraud? Leading Digit 2 3 4 5 6 7 8 9 Actual Frequency 243 136 112 60 77 62 45 44 18 Benford's Law: Distribution of Leading Digits 30.1% 17.6% 12.5% 9.7% 7.9% 6.7% 5.8% 5.1% 4.6% Determine the null and alternative hypotheses. Ho : H 1 : Calculate the test statistic, x-. x2 = (Round to three decimal places as needed.) Calculate the P-value. P-value = (Round to four decimal places as needed.) State the conclusion. Ho. There sufficient evidence to warrant rejection of the claim that the leading digits are from a population with a distribution that conforms to Benford's law. It that the checks are the result of fraud