In randomized, double blind clinical trials of a new vaccine,Monkeys were randomly divided into two groups.Subjects...

In randomized, double blind clinical trials of a new vaccine,Monkeys were randomly divided into two groups.Subjects in group x received the new vaccine while subject in group y received a control vaccine.After the first dose, 118 of 715 subjects in the experimental group ( group x) experienced fever as a side effect. After the first dose, 56 of 606 of the subjects in the control group ( group y ) experienced fever as a side effect.Construct a 90 % confidence interval for the diffence between the two population proportopm , Px-Py( Round to three decimal places as needed)

Solutions

Expert Solution

90 % confidence interval for the difference between the two population proportions is = (0.043,0.103).

orchestra answered 11 months ago

Next > < Previous

Related Solutions

In randomized, double-blind clinical trials of a new vaccine, monkeys were randomly divided into two groups....

In randomized, double-blind clinical trials of a new vaccine, monkeys were randomly divided into two groups. Subjects in group 1 received the new vaccine while subjects in group 2 received a control vaccine. After the second dose, 113 of 727 subjects in the experimental group (group 1) experienced drowsiness as a side effect. After the second dose, 70 of 608 of the subjects in the control group (group 2) experienced drowsiness as a side effect. Does the evidence suggest that...

In randomized, double-blind clinical trials of a new vaccine, infants were randomly divided into two groups....

In randomized, double-blind clinical trials of a new vaccine, infants were randomly divided into two groups. Subjects in group 1 received the new vaccine while subjects in group 2 received a control vaccine. After the second dose,114 of 726 subjects in the experimental group (group 1) experienced drowsiness as a side effect. After the second dose, 71 of 607 of the subjects in the control group (group 2) experienced drowsiness as a side effect. Does the evidence suggest that a...

The Salk Vaccine Trials of 1954 included a randomized control double blind study in which elementary...

The Salk Vaccine Trials of 1954 included a randomized control double blind study in which elementary school children of consenting parents were assigned at random to injection with the Salk Vaccine or a placebo. Both treatment and control group were set at 200,000 because the target disease , infantile paralysis (POLIO) was uncommon, but in many cases deadly. The number in the control group ended up to be 199,858 and the number in the treatment group ended up to be...

In a clinical trial of a? vaccine, 10000 children were randomly divided into two groups. The...

In a clinical trial of a? vaccine, 10000 children were randomly divided into two groups. The subjects in group 1? (the experimental? group) were given the vaccine while the subjects in group 2? (the control? group) were given a placebo. Of the 5000 children in the experimental? group, 74 developed the disease. Of the 5000 children in the control? group, 107 developed the disease. Determine whether the proportion of subjects in the experimenta group who contracted the disease is less...

For the clinical trials of a weight-loss drug containing Garcinia Cambogia the subjects were randomly divided...

For the clinical trials of a weight-loss drug containing Garcinia Cambogia the subjects were randomly divided into two groups. The first received an inert pill along with an exercise and diet plan, while the second received the test medicine along with the same exercise and diet plan. The patients do not know which group they are in, nor do the fitness and nutrition advisors. a. Which is the treatment group? b. Which is the control group (if there is one)?...

The drug ancrod was tested in a double-blind clinical trial in which stroke patients were randomly...

The drug ancrod was tested in a double-blind clinical trial in which stroke patients were randomly assigned to receive either ancrod or a placebo. One of the response variables in the study was whether or not the subjects experienced intracranial hemorrhaging. Of the 84 patients who received ancrod, 13 hemorrhaged. Of the 77 patients who received the placebo, only three hemorrhaged. a.Is there a significant difference in hemorrhaging rates between treatments? Show your work and include all steps for full...

In clinical trials of the anti-inflammatory drug Inflaminex, adult and adolescent allergy patients were randomly divided...

In clinical trials of the anti-inflammatory drug Inflaminex, adult and adolescent allergy patients were randomly divided into two groups. Some patients received 500mcg of Inflaminex, while some patients received a placebo. Of the 2103 patients who received Inflaminex, 520 reported bloody noses as a side effect. Of the 1671 patients who received the placebo, 368 reported bloody noses as a side effect. Is there significant evidence to conclude that the proportion of Inflaminex users who experienced bloody noses as a...

A sample obese adult males were randomly divided into two groups in a clinical program. In...

A sample obese adult males were randomly divided into two groups in a clinical program. In the experimental group, participants were involved in a vigorous 30-minute-per-day exercise program and also given instructions on the importance of diet. The control group only received the diet instructions. The program directors want to determine if the exercise program had an impact on LDL cholesterol levels. Below are the LDL cholesterol data after one month in the program. What can be concluded with an...

A doctor released the results of clinical trials for a vaccine to prevent a disease. In...

A doctor released the results of clinical trials for a vaccine to prevent a disease. In these clinical trials, 20,000 children were randomly divided in two groups. The subjects in group 1 (the experimental group) were given the vaccine, while the subjects in group 2 (the control group) were given a placebo. Of the 10,000 children in the experimental group, 230 developed the disease. Of the 10,000 children in the control group, 480 developed the disease. Estimate the difference in...

You are on the DSMB of a double-blind clinical trial of a two-arm pharmaceutical intervention study...

You are on the DSMB of a double-blind clinical trial of a two-arm pharmaceutical intervention study with a time-to-event outcome. A DSMB meeting will occur after the first third of the participants are enrolled. Briefly describe two data summaries you would expect to be reported on in the open session of a DSMB meeting, and give a brief rationale for why the DSMB would want to see those summaries

Subjects