A newspaper published an article about a study in which researchers subjected laboratory gloves to stress. Among 230 vinyl gloves, 57% leaked viruses. Among 230 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 latex gloves. Let vinyl gloves be population 1. A Click the icon to view the technology results. U A. Ho: P = P2 H,: P, > P2 UB. Mo: Pi = P2 H,: P, # P2 t. Ho: P, = P2 Technology Results O D. Hg: P, #P2 H,: P, =P2 O E. Ho: P,> P2 H,: P, = P2 Pooled proportion: 0.33 Test statistic, z: 10.9407 Critical z: 1.6449 P-value: 0.0000 Identify the test statistic. (Round to two decimal places as needed.) 90% Confidence interval: 0.4164166

A newspaper published an article about a study in which researchers subjected laboratory gloves to stress. Among 230 vinyl gloves, 57% leaked viruses. Among 230 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 latex gloves. Let vinyl gloves be population 1. A Click the icon to view the technology results. U A. Ho: P = P2 H,: P, > P2 UB. Mo: Pi = P2 H,: P, # P2 t. Ho: P, = P2 Technology Results O D. Hg: P, #P2 H,: P, =P2 O E. Ho: P,> P2 H,: P, = P2 Pooled proportion: 0.33 Test statistic, z: 10.9407 Critical z: 1.6449 P-value: 0.0000 Identify the test statistic. (Round to two decimal places as needed.) 90% Confidence interval: 0.4164166

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

See similar textbooks

Similar questions

A researcher wishes to determine if violent television shows increase the tendency of young children to exhibit physical aggression. They have three video shows at their disposal – a cartoon with a high level of physical violence, an episode of Barney, a television show promoting understanding with little or no physical violence or aggression, and a ‘neutral’ show on how corn is grown. Design an experiment to address the researcher’s question using a repeated-measures ANOVA approach.
Part: 2/5 Part 3 of 5 (c) Compute the P-value. Round the answer to at least four decimal places. P-value= X Ś
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.
Consider a drug that is used to help prevent blood clots in certain patients. In clinical trials, among 6225 patients treated with this drug, 164 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? OC. Ho:p= 0.03 H4:p>0.03 O D. Ho: p#0.03 H:p=0.03 Identify the test statistic for this hypothesis test. The test statistic for this hypothesis test is (Round to two decimal places as needed.) Identify the P-value for this hypothesis test. The P-value for this hypothesis test is. (Round to three decimal places as needed.) Identify the conclusion for this hypothesis test. O A. Reject Hn. There is sufficient evidence to warrant rejection of the claim that 3% of users develop nausea. O B. Reject Ho. There is not sufficient evidence to warrant rejection of the claim that 3% of users develop nausea. OC. Fail to reject Ho. There is sufficient evidence to warrant rejection…
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
Researchers investigate how the presence of cell phones influence the quality of human interaction. Subjects are randomly selected from a population and divided into an experimental group that is asked to leave their phones in the front of the room and a control group that are not asked to leave their cell phones at the front of the room. Subjects are left alone for 10 minutes and then asked to take a survey designed to measure quality of interactions they had with others in the experiment. What statistical test is appropriate?
Rhino viruses typically cause common colds. In a test of the effectiveness of echinacea, 44 of the 51 subjects treated with echinacea developed rhinovirus infections. In a placebo group, 97 of the 110 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. a. 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?
Identify the P-value. What is the conclusion for this test?
According to a recent poll, the percentage of Americans who would vote for the incumbent president is 53%. If a random sample of 100 people in New York results in 45% who would vote for the incumbent, test the claim that the percentage of people in New York who would vote for the incumbent president is different from 53%. Use the following results and a 0.10 significance level to state your decision about H0. H0 : p=0.53 H1 : p≠0.53 test statistic: z = -1.6 p value = 0.1090
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 newspaper published an article about a study in which researchers subjected laboratory gloves to stress. Among 228 vinyl gloves, 69% leaked viruses. Among 228 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? P2 O A. Ho: P₁ P2 OB. Ho: P1 P2 H₁: P₁ OC. Ho: P1 H₁: P₁ H₁: P₁ P2 P2 P2 O D. Ho: P1 OE. Ho: P1 P2 P2 OF. 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 null hypothesis. There is The P-value is have a greater virus leak rate than latex gloves. the significance level x, so Technology Results Pooled proportion: 0.39 Test statistic,…
In the previous year, 40% of women over the age of fifty had regularly scheduled mammograms. Following last year's test, a campaign was initiated to encourage women to be tested regularly. This year, a cancer research group surveys a random sample of 450 women, and 195 respond affirmatively. With a 5% significance level, test to see if the campaign was effective.