Question 6A new drug results in lowering the heart rate by varying amounts. In a test of the effectiveness of the drug,20 subjects were treated and their heart rates were measured after the treatment. The drops in their heartrates have a mean of 4.85 beats per minute and a standard deviation of 3.18 beats per minute. Construct a95% confidence interval for the mean decrease in the heart rate after using the new drug. You may assumethat the sample is from a normal population.i. Procedure: Select an answerSelect an answerOne mean Z procedureOne variance x² procedureOne mean T procedureOne proportion Z procedureii. Assumptions: (select everything that applies)Simple random sampleNormal populationThe number of positive and negative responsesPopulation standard deviation is knownPopulation standard deviation is unknownSample size is greater than 30iii. Unknown parameter: Select an answerSelect an answerμ, population meanp. population proportiono², population variance

Given,sample size(n)=20sample mean(x¯)=4.85sample standard deviation(s)=3.18degrees of…

Answered: A new drug results in lowering the…

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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What is the normalized z-score for a data point that has a value of 50 if the mean (Mu) is 560 and sigma is 55? This data point is taken from a total of 800 data point values .
It takes an average of 9.1 minutes for blood to begin clotting after an injury. An EMT wants to see if the average will decline if the patient is immediately told the truth about the injury. The EMT randomly selected 49 injured patients to immediately tell the truth about the injury and noticed that they averaged 8 minutes for their blood to begin clotting after their injury. Their standard deviation was 3.31 minutes. What can be concluded at the the a = 0.05 level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Hint: Ho: ? H₁: ? Select an answer Select an answer C c. The test statistic? is -2.326. Enter it here d. The p-value is 0.0121364015. Enter it here e. The p-value is ? a f. Based on this, we should Select an answer the null hypothesis. g. Thus, the final conclusion is that ... (please show your answer to 3 decimal places.) (Please show your answer to 4 decimal places.) The data suggest the populaton mean is…
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It takes an average of 10.2 minutes for blood to begin clotting after an injury. An EMT wants to see if the average will decline if the patient is immediately told the truth about the injury. The EMT randomly selected 60 injured patients to immediately tell the truth about the injury and noticed that they averaged 10.1 minutes for their blood to begin clotting after their injury. Their standard deviation was 1.62 minutes. What can be concluded at the the a = 0.01 level of significance? a. For this study, we should use Select an answer b. The null and altemative hypotheses would be: Họ: Select an answer H1: ? Select an answer c. The test statistic (please show your answer to 3 decimal places.) d. The p-value = e. The p-value is (? va f. Based on this, we should Select an answer v the null hypothesis. g. Thus, the final conclusion is that .. (Please show your answer to 4 decimal places.) O The data suggest the population mean is not significantly less than 10.2 at a = 0.01, so there is…
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