Researchers reported a study in which 409 domestic violence defendants were randomly assigned to counseling and probation​ (the experimental​ group) or just probation​ (the control​ group). Out of people 238 in the counseling​ group, 51 were arrested within 12 months. Out of 171 people assigned to​ probation,41 were arrested within 12 months. Determine whether counseling lowered the arrest​rate; use a 0.05 significance level. Start by comparing the percentages. 1. Write the hypothesis for the test. Ho ___ Ha ____ 2. z = ___  ​(Round to two decimal places as​needed.) 3. p-value = ____ (Round to three

One survey showed that among 766   randomly selected subjects who completed four years of​ college, 18.3% smoke and​ 81.7% do not smoke. Use a 0.01 significance level to test the claim that the rate of smoking among those with four years of college is less than the​ 27% rate for the general population. . Calculate the​ P-value. Which of these options is closest to the​ P-value?     A. 0.0005   B. 0.9999   C. 0.5000   D. 0.0001   e. State the technical conclusion.     A. Do not reject Upper H 0     B. Reject Upper H 0     f. State the final conclusion.     A. The sample data support the claim.   B. There is sufficient evidence to warrant rejection of the claim.   C. There is not sufficient evidence to warrant rejection of the claim.   D. There is not sufficient sample evidence to support the claim.   g. Based on the​ results, does it appear that those who completed four years of college…

A marketing agency wanted to determine if a new commercial changed people's opinion about a company. They recruited n=30 participants to watch the commercial. First, everyone was givien a survey to determine their attitudes toward the company. Then, everyone watched the new commercial. Finally, they were given the same survey again and asked about their attitudes toward the comapny after seeing the commercial. The agency wanted to see if attitudes were changed by the commercial. What statistical test should they use?

Provide an appropriate response. 1) A local supermarket claims that the waiting time for its customers to be served is the lowest in the area. A competitor's supermarket checks the waiting times at both supermarkets. The sample statistics are listed below. Test the local supermarket's hypothesis. Use a = 0.05. Local Supermarket n1 = 15 Competitor Supermarket n2 = 16 x2 = 5.6 minutes s2 = 1.0 minutes x1 = 5.3 minutes s1 = 1.1 minutes