A group of 500 patients who suffer from hypothyroidism, a condition in which yourthyroid does not produce enough of certain hormones, were asked to participate in astudy to determine the effectiveness of a new medication. The patients were randomlydivided into two groups, one that was given the actual medication and one that receiveda placebo pill. Some of results of the study are below.ConditionImprovedCondition DidNOT ImproveTOTALa. Complete the table.GivenMedication20565270GivenPlacebo130210TOTAL285b. Is this an observational study or a controlled experiment? Explain. Identify thepopulation and the sample.c. What percent of patients who took the medication showed improved conditions?What percent of patients who took the placebo showed improved conditions?d. Assume that this is a well-designed study. Can the researchers conclude that the newmedicine causes improved conditions? Why or Why not?

answer is in next step. as per guideline i am giving answer of three subparts . please give a like!!

Answered: A group of 500 patients who suffer from…

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section: Chapter Questions

Problem 8CR

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Patients immobilized for a substantial amount of time can develop deep vein thrombosis (DVT), a blood clot in a leg or pelvis vein. DVT can have serious adverse health effects and can be difficult to diagnose. On its website, drug manufacturer Pfizer reports the outcome of a study looking at the effectiveness of the drug Fragmin (dalteparin) in preventing DVT in immobilized patients. Of the 1518 randomly chosen immobilized patients given Fragmin, 42 experienced a complication from DVT. Of the 1473 randomly chosen immobilized patients given a placebo, 73 experienced a complication from DVT. Compute the proportion (risk) of patients experiencing DVT complications for immobilized patients treated with Fragmin. (Enter the proportion with 4 decimal places. DO NOT enter the percent.)
When a company , while doing research tries to look at 2 or more treatments simultaneously , the type of experimental design is a. Factorial design b. Randomised Block design c. Completely randomized block design d. Latin square design
In the search for a cure for the Coronavirus, it is important to determine what proportion of the population has antibodies, which would likely make them immune or less susceptible to the effects of the disease. According to an article in Politico published on April 26, 2022, 60% of Americans currently have detectible antibodies for Covid-19. A researcher thinks that more than 60% of Americans currently have antibodies for Covid-19. Suppose that the researcher takes a simple randomsample of 1200 Americans, tests their blood, and find that 750 of them have antibodies. Use a 0.05 significance level to test the researcher’s claim.
A neurosurgeon believes that lesions in a particular area of the brain, called the thalamus, will decrease pain perception. If so, this could be important in the treatment of terminal illness that is accompanied by intense pain. As a first attempt to test this hypothesis, he conducts an experiment in which 16 rats are randomly divided into two groups of eight each. Animals in the experimental group receive a small lesion in the part of the thalamus thought to be involved with pain perception. Animals in the control group receive a comparable lesion in a brain area believed to be unrelated to pain. Two weeks after surgery, each animal is given a brief electrical shock to the paws. The shock is administered in an ascending series, beginning with a very low intensity level and increasing until the animal first flinches. In this manner, the pain threshold to electric shock is determined for each rat. The following data are obtained. Each score represents the current level (milli-amperes)…

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