3.While I am dog person, my husband is a cat person. Two years ago, I wastrying to convince him to get a dog and my argument was that more than 50% ofpeople think dogs are cuter than cats. For that reason, I searched online and found asurvey that claims that when 664 people were asked whether they think dogs arecuter than cats, 362 answered yes. I then performed a hypothesis test to convincehim.Let p denote the proportion of people that think dogs are cuter thancats. Test the hypothesis Ho : p = 0.5 Vs H1 : p > 0.5 using a =0.05.college stuThe sample mean and standard deviation of the collectend 33 sonde, epectively0.05 and sale your co(12 pointe) Pertsionypethesis teet using o

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Answered: 3. While I am dog person, my husband is…

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...

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It is believed that positive, self-affirming statements can lead to greater academic success on high- stakes assessments. In a recent study, 120 advanced algebra students were randomly assigned to two groups. One group was instructed how to write and recite daily positive self-affirmations while the other group did not do any affirmations. After one semester, all 120 students took the same algebra examination. Which of the following would be appropriate hypotheses for this study? (A) Ho: M₁ = ₂ and Ha: ₁ ₂, where ₁ = mean score for those who used affirmations and U₂ = mean score for those who don't use affirmations. (D) Ho: H1 H2 and Ha: ₁ = µ2, where μ, mean score for those who used affirmations and μ₂ = mean score for those who don't use affirmations. (E) Ho: H₁ H₂ and Ha: 1 = P2, where μ, mean score for those who used affirmations and U₂ = mean score for those who don't use affirmations.
3. A claim is made that the proportion of college students who have Netflix accounts is 0.85. Noah believes this claimed value is too high. He is able to survey a random sample of 240 college students, and he finds that the sample proportion who have Netflix accounts is 0.82. Noah proceeds to use this data to conduct a hypothesis test. Based on this information, which one of the following statements is correct? A. The p-value will be smaller than 0.01 but larger than 0. B. The p-value will be between 0.01 and 0.05. C. The p-value will be between 0.05 and 0.10. D. The p-value will be larger than 0.10.
A researcher selects a sample of 20 participants and makes the decision to fail to reject the null hypothesis. She conducts the same study testing the same hypothesis with a sample of 100 participants and makes the decision to reject the null hypothesis. Give a likely explanation for why the two samples led to different decisions.
In a sample of 183 male job-holders, 55% said that they are satisfied with their jobs. In another sample of 171 female job-holders, 65% said that they are satisfied with their jobs. The null hypothesis is that the proportions of all female and all male job-holders who are satisfied with their jobs are equal. The alternative hypothesis is that the proportion of all female job-holders who are satisfied with their jobs is greater than the proportion of all male job-holders who are satisfied with their jobs. The significance level is 2%. What is the approximate p-value for this test? e. 0.9732 b. 0.9975 d. 1.0000 a. 0.9139 c. 0.9724
If P( A) = .40, P( B) = .30, and P AOB) = .15, then P( AI B) is .375 .12 .50 .045
A music student wants to know if taking a difficult math course will improve his musical ability. Which of these is the null hypothesis? The student's math scores will improve. There will be no change in math scores. There will be no change in musical ability. The student's musical ability will improve.
I need help with parts b,c,d
A poll done for Newsweek found that 13% of Americans have seen or sensed the presence of an angel. A contingent doubts that the percent is really that high. It conducts its own survey. Out of 76 Americans surveyed, only two had seen or sensed the presence of an angel. As a result of the contingent’s survey, would you agree with the Newsweek poll? Perform a hypothesis test, using the five-step process, to test whether the proportion of Americans who have seen or sensed the presence of an angel is less than 13%.
Bill, a psychologist, has developed a new aptitude test. He was able to show (through a somewhat dubious study) that 60% of the public passed the test. A second psychologist, Tamera, wants to recreate this study. She believes the actual percentage is less than 60%. A random sample of 320 people took the test, and 182 passed. a) State the null and altemate hypotheses to test the claim that the actual percentage is different than 60%. Ho: p = HA: p# b) What is the point estimate for the proportion of the public that passed the test? Point Estimate = c) Using a standard error of 0.0274, what is the test statistic? Test Statistic = d) Compute the p-value. The p-value- The p-value « .001 e) Should Tamera reject or fail to reject the null hypothesis?
A group of 250 patients was randomly split into two groups of 125 patients. The first group of 125 patients was given treatment A, and 72 of them improved their condition. The second group of 125 patients was given treatment B, and 60 of them improved their condition. Perform a hypothesis test to investigate whether there is evidence of a difference between the two treatments. What is the p-value of the test?
2
2. Use the following scenario to conduct a hypothesis test. Then use that to answer questions a- g. You would like to determine if the use of a new teaching intervention helps to improve attention in 5- year-old boys. To test this hypothesis, you have separated 35 5-year-old boys into two groups, one with the intervention (treatment group) and the other given normal class time (the control group). You would like to test if the treatment group had longer attention times (in minutes) than the control group. (The significance level of the test is .05) The following are the data for the two groups: Control Group (Group 1) 7 11 6 6 8. 11 14 7 8. 2 Treatment Group (Group 2) 11 12 14 16 18 14 11 8 7 10 11 Answer the following questions to run the hypothesis test. You should use the notation and methods described in the course: a. What test should you run? b. What is the null hypothesis in sentences and symbols? c. What is the alternative hypothesis in sentences and symbols? d. What is the…

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