listn1Lion 2estion 3Question 4Question 5Question 6O Question 7onKA newspaper published an article about a study in which researchers subjected laboratory gloves to stress. Among 237 vinyl gloves, 59% leaked viruses. Among 237 latex gloves, 9%leaked viruses. Using the accompanying display of the technology results, and using a 0.05 significance level, test the claim that vinyl gloves have a greater virus leak rate than latexgloves. Let vinyl gloves be population 1.Click the icon to view the technology results.Help me solve thisZWhat are the null and alternative hypotheses?BBSXOA. Ho: P1 P2H₁: P1 P2View an exampleHcommandOD. Ho: P1P2H₁: P₁ P2380 )EGet more helpC$RF1%5VTGOB. Ho: P1 P2H₁: P1P2OE. Ho: P1 P2H₁: P₁ P2Technology ResultsPooled proportion: 0.34Test statistic, z: 11.4616Critical z: 1.6449P-value: 0.000090% Confidence interval:0.4371413

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Answered: A newspaper published an article about…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Please help me better understand how to properly solve. A randomized controlled experiment in Charlotte, North Carolina, studied three police responses to spousal abuse: advise and possibly separate the couple, issue a citation to the offender, and arrest the offender. The effectiveness of the three responses was determined by re-arrest rates. The photo shows the rates. Research wishes to test null hypothesis that that the proportions of subsequent arrests are the same regardless of the treatment assigned. Under the null hypothesis, determine the expected number of times no subsequent arrest would occur for the treatment “Advise/separate”?
Rhino viruses typically cause common colds. In a test of the effectiveness of echinacea, 40 of the 46 subjects treated with echinacea developed rhinovirus infections. In a placebo group, 87 of the 104 subjects developed rhinovirus infections. Use a 0.01 significance level to test the claim that echinacea has an effect on rhinovirus infections. Complete parts (a) through (c) below. Test the claim using a hypothesis test. Consider the first sample to be the sample of subjects treated with echinacea and the second sample to be the sample of subjects treated with a placebo. What are the null and alternative hypotheses for the hypothesis test? A. H0: p1≥p2 H1: p1≠p2 B. H0: p1=p2 H1: p1≠p2 C. H0: p1≠p2 H1: p1=p2 D. H0: p1=p2 H1: p1<p2 E. H0: p1=p2 H1: p1>p2 F. H0: p1≤p2 H1: p1≠ Identify the test statistic. Z = (Round to two decimal places as needed.) P-value= The P-value is (Less than/ greater than) the significance level of α=0.05,…
A new shampoo is being test-marketed. A large number of 16 ounce bottles were mailed out at random to potential customers in the hope that the customers will retuen an enclosed questionnaire. Out of tbe 1500 returned questionnaires, 975 indicated that they like the shampoo and will consider buying ir when it becomes available on the market. Perform a hypothesis to determine if the proportion of potential customers is at most 65 percent. Use a level of significance of 0.05.
A newspaper published an article about a study in which researchers subjected laboratory gloves to stress. Among 200 vinyl gloves, 69% leaked viruses. Among 200 latex gloves, 9% leaked viruses. Using the accompanying display of the technology results, and using a 0.10 significance level, test the claim that vinyl gloves have a greater virus leak rate than latex gloves. Let vinyl gloves be population 1. Click the icon to view the technology results. What are the null and alternative hypotheses? A. Ho: P₁ P2 H₁: P1 P2 D. Ho: P1 P2 H₁: P1 P2 Identify the test statistic. OB. Ho: P1 P2 H₁: P1 = P2 (Round to two decimal places as needed.) View an example Get more help. Ho: P1 P2 H₁: P₁ P2 D Pearson OC. Ho: P1 H₁: P1 OF. Ho: P1 H₁: P1 Clear all P2 P2 P2 P2 Check answer
A newspaper published an article about a study in which researchers subjected laboratory gloves to stress. Among 274 vinyl gloves, 68% leaked viruses. Among 274 latex gloves, 7% leaked viruses. Using the accompanying display of the technology results, and using a 0.05 significance level, test the claim that vinyl gloves have a greater virus leak rate than latex gloves. Let vinyl gloves be population 1. A Click the icon to view the technology results. What are the null and alternative hypotheses? O A. Ho P1=P2 H1 P1 > P2 O B. Ho P1 p2 H1 P1 = P2 O C. Ho P1 P2 H1 P1 =P2 Identify the test statistic. (Round to two decimal places as needed.) Identify the P-value (Round to three decimal places as needed.) Click to select your answer(S).
According to a Pew Research Center study, in May 2011, 33% of all American adults had a smart phone (one which the user can use to read email and surf the Internet). A communications professor at a university believes this percentage is higher among community college students. She selects 320 community college students at random and finds that 135 of them have a smart phone. In testing the hypotheses: Ho: p = 0.33 versus Ha: p > 0.33 Do the hypothesis test. Use a level of significance of a = 0.05; Use the unrounded values in Excel to find the answers for #3 and #4. 1. This is an example of a hypothesis test. 2. Find the standard error. 3. Find the z value. 4. Find the p-value. 5. The communication professor should the null hypothesis.
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A simple random sample of size n = 200 drivers with a valid driver's license is asked if they drive an American-made automobile. Of the 200 drivers surveyed, 118 responded that they drive an American-made automobile. Determine if a majority of those with a valid driver's license drive an American-made automobile at the a = 0.05 level of significance. ..... What type of variable is "drive an American-made automobile, or not"? A. Qualitative with two possible outcomes B. Discrete C. Continuous…
A simple random sample of front-seat occupants involved in car crashes is obtained. Among 2868 occupants not wearing seat belts, 28 were killed. Among 7791 occupants wearing seat belts, 14 were killed. Use a 0.05 significance level to test the claim that seat belts are effective in reducing fatalities. Complete parts (a) through (c) below. a. Test the claim using a hypothesis test. Consider the first sample to be the sample of occupants not wearing seat belts and the second sample to be the sample of occupants wearing seat belts. What are the null and alternative hypotheses for the hypothesis test? O A. Ho: P, 2 P2 H1: P1 + P2 VB. Ho: P1 = P2 H1: P1 > P2 O C. Ho: P1 = P2 H1: P1
Homechooling has become very popular in the United States, and many colleges try to attract students from this group. Evidence suggests that approximately 90% of all homeschooled children attend college. To check this claim, a random sample of 208 homeschooled children was obtained, and 180 of them were found to have attended college. The researcher wishes to determine whether the proportion of homeschool children who attend college is different from 0.90. Test an appropriate hypothesis and state your conclusion. Make sure to state and check all conditions and state your conclusion in context.

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