A newspaper published an article about a study in which researchers subjected laboratory gloves to stress. Among 228 vinyl gloves, 69% leaked viruses. Among228 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 gloveshave 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?P2O A. Ho: P₁ P2OB. Ho: P1 P2H₁: P₁OC. Ho: P1H₁: P₁H₁: P₁P2P2P2O D. Ho: P1OE. Ho: P1P2P2OF. Ho: P1 P2H₁: P₁ P2H₁: P₁P2H₁: P₁P2Identify the test statistic.(Round to two decimal places as needed.)Identify the P-value.(Round to three decimal places as needed.)What is the conclusion for this test?the null hypothesis. There isThe P-value ishave a greater virus leak rate than latex gloves.the significance level x, soTechnology ResultsPooled proportion: 0.39Test statistic, z: 13.1382Critical z: 1.2816P-value: 0.000080% Confidence interval:0.5546718 P₁ P2 <0.6470826PrintDoneevidence to support the claim that vinyl gloves- X

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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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According to the Center for Disease Control website, in 2011 at least 18% of high school students have smoked a cigarette. An Introduction to Statistics class in a town conducted a hypothesis test at the local high school (a medium sized—approximately 1,200 students—small city demographic) to determine if the local high school's percentage was lower. One hundred fifty students were chosen at random and surveyed. Of the 150 students surveyed, 85 have smoked. Use a significance level of 0.05 and using appropriate statistical evidence, conduct a hypothesis test and state the conclusions.Note: If you are using a Student's t-distribution for the problem, you may assume that the underlying population is normally distributed. (In general, you must first prove that assumption, though.) State the p-value. (Round your answer to four decimal places.)
A newspaper published an article about a study in which researchers subjected laboratory gloves to stress. Among 262 vinyl gloves, 68% leaked viruses. Among 262 latex gloves, 11% 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? O A. Ho: P1 P2 H₁: P1 P2 OD. Ho: P1 P2 H₁: P1 = P2 Identify the test statistic. B. (Round to two decimal places as needed) Ho: P1 P2 H₁: P1 = P2 O E. Ho: P1 P2 H₁: P1 P2 OC. Ho: P1 P2 H₁: P1 = P2 OF. Ho: P1 = P2 H₁: P1 P2
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).
A newspaper published an article about a study in which researchers subjected laboratory gloves to stress. Among 235 vinyl gloves, 56% leaked viruses. Among 235 latex gloves, 15% leaked viruses. Using the accompanying display of the technology results, and using a 0.01 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. atcrunch 2 What are the null and alternative hypotheses? W S I OA. Ho: P1 P2 H₁: P₁ P2 OD. Ho: P1 P2 H₁: P₁ P2 Identify the test statistic. X (Round to two decimal places as needed.) Identify the P-value. Tech help ommand H Round to three darimal nlaces as nearleri 1 # 3 80 A E $ 288 D el с R F % 5 V T G OB. Ho: P1 P2 H₁: P₁ P2 OE. Ho: P1 P2 H₁: P₁ P2 MacBook Air B Y & 7 H 3 N *** 8 J M K OC. Ho: P1 P2 H₁: P₁ =P2 OF. Ho: P1 #P2 H₁: P1 P2 O L H P command Next alt option
Acne is a common skin disease that affects most adolescents and can continue into adulthood. A study compared the effectiveness of three acne treatments and a placebo, all in gel form, applied twice daily for 12 weeks. The study's 517 teenage volunteers were randomly assigned to one of the four treatments. Success was assessed as clear or almost clear skin at the end of the 12 week period. The results of the study can be seen in the table below. Using the appropriate statistical test, determine if there is significant evidence that the four treatments perform differently. If so, how do they compare.
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
Consider a drug that is used to help prevent blood clots in certain patients. In clinical trials, among 6055 patients treated with this drug, 152 developed the adverse reaction of nausea. Use a 0.01 significance level to test the claim that 3% of users develop nausea. Does nausea appear to be a problematic adverse reaction?
Adults randomly selected for a poll were asked if they "favor or oppose using federal tax dollars to fund medical research using stem cells obtained from human embryos." Of the subjects surveyed, 257 were in favor, 281 were opposed, and 103 were unsure. A politician claims that people don't really understand the stem cell issue and their responses to such questions are random responses equivalent to a coin flip. Use a 0.01 significance level to test the claim that the proportion of subjects who respond in favor is equal to 0.5. Find the null and alternative hypothesis. H0: p=0.5 p<0.5 p≠0.5 p>0.5 H1: p<0.5 p>0.5 p≠0.5 p=0.5 If we consider + to represent those in favor, then how many of each sign is there? Positive Signs: Negative Signs: Total Signs: What is the p-value? (Round to three decimal places.) What is the conclusion about the null? What is the conclusion about the claim?
A newspaper published an article about a study in which researchers subjected laboratory gloves to stress. Among 251 vinyl gloves, 55% leaked viruses. Among 251 latex gloves, 12% 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. iClick the icon to view the technology results. What are the null and alternative hypotheses? OA. Ho: P1 P2 OB. Ho: P₁ P2 OC. Ho: P1 P2 H₁: P₁ P2 H₁: P₁ P2 H₁: P₁ = P2 OF. Ho: P1 P2 O D. Ho: P1 P2 O E. Ho: P₁ P2 H₁: P₁ P2 H₁: 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.) What is the conclusion for this test? The P-value is the significance level a, so claim that vinyl gloves have a greater virus leak rate than latex gloves. the null hypothesis. There is evidence to support the

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