Researchers want to test a new hand exercise plan forarthritis patients to see if they have improved flexibility.They recruited 110 patients with arthritis in their handsand randomly assigned them to one of two treatmentgroups: group 1 took their regular medicine and did thenew hand exercises; and group 2 only took medicine.After one month, 42 of the 55 in group 1 improved in theirflexibility, and 37 of the 55 in group 2 improved theirflexibility.Check the conditions for constructing a confidenceinterval for the difference in proportions.Random condition: V met10% condition:Large Counts condition:Are all the conditions for inference met?

Given in the question: Group 1: n1 = 55 x1 = Number of patients with arthritis in their hands…

Answered: Researchers want to test a new hand…

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.6: Summarizing Categorical Data

Problem 28PPS

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Explain the differences between Gaussian elimination and Gauss-Jordan elimination.
In one of their studies, Strayer and his students tested whether people would get better at driving while talking on a cell phone if they practiced doing so (Cooper & Strayer, 2008). They had participants drive in a simulator while talking on a hands-free cell phone and while not talking on a phone. The same people participated over several days, so they had a chance to practice this multitasking. On the first day, they were considered to be least experienced; on the last day, the most experienced. On the last day, they were tested in both a familiar environment and a slightly different driving environment to see if the first days of practice would transfer to a new context. The researchers collected data on how many collisions (accidents) the drivers got into on the simulator. All of the data is in the picture below!! Please answer the following questions about the study! 1. What kind of design is this? (put your answer in the form ___X___ 2. What are the Vs and their levels in…
A national study found that treating people appropriately for high blood pressure reduced their overall mortality by 20%. Treating people adequately for hypertension has been difficult because it is estimated that 50% of hypertensives do not know they have high blood pressure, 50% of those who do know are inadequately treated by their physicians, and 50% who are appropriately treated fail to follow this treatment by taking the right number of pills. If the preceding 50% rates were each reduced to 35% by a massive education program, then what effect would this change have on the overall mortality rate among true hypertensives; that is, would the mortality rate decrease and, if so, what percentage of deaths among hypertensives could be prevented by the education program? (Round your answer to two decimal places.) The overall mortality rate among hypertensives would be reduced by how much? If possible please demonstarte how this can be done on a calculator, thank you!

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