2.(a)(b)(c)Patients with chronic kidney failure may be treated by dialysis, using a machine thatremoves toxic wastes from the blood, a function normally performed by the kidneys.Kidney failure and dialysis can cause other changes, such as retention ofphosphorus, that must be corrected by changes in diet. A study of the nutrition ofdialysis patients measured the level phosphorus in the blood of 45 dialysispatients and their average phosphorus level was 5.2 mg/dl.(e)Assuming blood phosphorus varies according to a normal distribution, with o = 0.9mg/dl, find a 99% confidence interval for the mean blood phosphorus level fordialysis patients.What is the margin of error in the 99% confidence interval found in part (a)Interpretation:99% CI:Interpret the confidence interval found in part (a)(d)If the level of confidence is changed to 90%, and all the other parameters stay thesame, what effect would lowering the level of confidence have in the size of theconfidence interval? Explain.Margin of error :-2-Because:The 90% confidence interval is (circle one) wider / narrower / the same than the99% confidence interval.How many dialysis patients should be sampled to obtain a margin of error of nomore than 0.3 in a 99% confidence interval?Sample size =

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Answered: 2. (a) (b) (c) Patients with chronic…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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12. A researcher at The Ohio State University believes that a certain component of ant venom can be used to lessen the amount of swelling in the knuckles of people suffering from arthritis The ant venom treatment has been made into a cream that can be rubbed on affected areas Explain how you would design an experiment to investigate whether this new treatment, when used each day for one week, causes a lower degree of swelling in arthritis sufferers. (You may suppose that 200 people suffering from arthritis have already volunteered to be experimental subjects.) Identify the explanatory variable and the response variable in your experiment
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A survey by a national association is designed to estimate the proportion of member organizations that have both talent and development programs in place to drive human-capital management as well as the member organizations' mean annual employee turnover cost. A random sample of 100 member organizations reveals the following: Frontline employee turnover cost: X= $13,200, S= $1000. Forty member organizations have both talent and development programs in place Complete parts (a) through (d) below. drive human-capital management. ..... a. Construct a 99% confidence interval estimate for the population mean frontline employee turnover cost of member organizations. (Round to two decimal places as needed.) b. Construct a 99% confidence interval estimate for the population proportion of member organizations that have both talent and development programs in place to drive human-capital management. (Round to four decimal places as needed.) c. What sample size is needed to have 90% confidence of…
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