A team of researchers is testing the effectiveness of a new HPV vaccine. They randomly divide the subj into two groups. Group 1 receives the new HPV vaccine, and Group 2 receives the existing HPV vaccine. Neither the patients or the doctors examining them knew which group they were in. Which is the treatment group? O Group 1 O Group 2 O Neither group Which is the control group (if there is one)? O Group 1 O Group 2 O No control group Is this study blind, double blind, or neither? O Blind O Double-blind O Neither

4. A graduate student in Health and Human Performance is interested in the effects of background noise on learning. He finds 18 undergraduate students who are willing to be part of the experiment. Well, the $100 Amazon gift card made it easy to find participants quickly. In any case, the students were randomly assigned to one of three treatments: 1) constant background noise; 2) random background noise; and 3) no background noise. The students were given material to study for one hour under these conditions. After that one hour, each student took a 20-point multiple-choice test. The scores for each student were as follows: constant noise: 16,17,14,15,16,13 random noise: 18,13,12,15,12,11 no noise: 20,19,18,16,15,17 a) What are the null and alternative hypotheses for this study? What statistical test should be used for this study? Justify your answer.  b) Calculate your appropriate test statistic. Please show all of your work.  c) Assume that the graduate set α to 0.05 during the…

A company wants to study the effects a new drug has on alleviating pain.  Some patients at doctor’s office are selected to be in the study.  The patients will be randomly assigned to take the new drug or the old drug.  They will be monitored to see when the pain goes away. The group getting the old drug is called what? A. Experiemental Group     B. Control Group     C. Dependent Group     D. Independent Group

2. A research firm tests the miles per gallon characteristics of three brands of gasoline. Because of different gasoline performance characteristics in different brands of automobiles, five brands of automobiles are selected and treated as blocks in the experiment; that is, each brand of automobile is tested with each type of gasoline. The results of the experiment (in miles per gallon) is given in Table 2. Table 2 Gasoline Brands Automobiles I II III A B D E a. How many factors and treatments involved in the study? State the factors and list all the possible treatments b. State the independent and dependent variables c. You are required to randomly generate data to fill up Table 2 using random number generator in Microsoft Excel. Please follow the following requirements: i. The data value should be within the range (18, 34). 11. The number of data for each treatment must be the same. (at least two data for each treatment) d. Based on your answer in (c), is there any interaction effect…

A team of researchers is testing the effectiveness of a new HPV vaccine. They randomly divide the subjects into two groups.Group 1 receives no vaccine, and Group 2 receives the new HPV vaccine.The patients in the study do not know which group they are in.Which is the treatment group? Group 1 Group 2 Neither group Which is the control group (if there is one)? Group 1 Group 2 No control group Is this study blind, double blind, or neither? Blind Double-blind Neither Which best describes this research? Survey Observational Study Experiment

A doctor wanted to study the effect of four different treatments on mental health. A group of 100 adults experiencing depression volunteered for the study. The doctor randomly assigned one-fourth of them to each of four groups. Group 1 followed a specific exercise plan, group 2 followed a specific diet plan, group 3 followed an exercise and diet plan, and group 4 did not follow any plan. After 4 weeks, the doctor contacted each participant and asked them if they felt any better. The results are displayed in the table.    The doctor would like to know if these data provide convincing evidence that the distribution of responses differs across the treatment groups in the population of all patients like these. The random condition is met. The 10% condition is not needed because random sampling did not take place. This table of expected counts shows that all expected counts are at least 5.   What is the value of the chi-square test statistic? χ‑2 = 5.03 χ‑2 = 6.26 χ‑2 = 25.33 χ‑2 = 39.22