There are four aferent CIINIcal sites In a small cty, patients In each site are enrolledand randomly receive either the experimental medication designed to lower bloodpressure or placebo, then the patients blood pressure measured after 5 hours. Datais given in the following table:TreatmentSite 1Site 2Site 3Site 4Hypertensive27564562No Hypertensive58695319Test if there is a difference in the proportions of hypertensive patients acrossclinical sites. Run the Chi-Squared test at a 5% level of significance and clearly statehypotheses, test statistic and conclusion.a.b)Fit independent and saturated loglinear models for these data. Is theresufficient evidence to indicate that there is a relationship between treatment andsite? Compare two models by "anova".

The chi-square test is used to check whether there is a statistically significant difference between…

Answered: mere are four aferent CIINIcal sites In…

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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Listed below are systolic blood pressure measurements (mm Hg) taken from the right and left arms of the same woman. Assume that the paired sample data is a simple random sample and that the differences have a distribution that is approximately normal. Use a 0.10 significance level to test for a difference between the measurements from the two arms. Identify the test statistic and p-value. Right arm Left arm 144 167 OA.T-3.07, p-value = 0.037 OB. T = -2.32, p-value = 0.081 OC. T = -1.93, p-value = 0.127 OD. T = -4.01, p-value = 0.016 133 161 132 179 138 145 136 144
solve for image and find critical values
Several bakeries in a town were asked the price for different amounts of donuts at their shop. The scatter plot with Total Cost (in dollars) 876543 ~ TO 0 0 1 Donut Pricing 2 3 4 5 Number of Donuts 6 7 8 line of best fit was created from the data gathered. Part A: Estimate the correlation coefficient. Explain your reasoning for the given value. Part B: How many positive and negative residuals are there? Explain your reasoning. Part C: State the point with the largest absolute value residual and interpret the point in terms of the context of the data.
An advertising agency is studying social media campaigns and how they impact website traffic. The advertising agency states the average increase in website traffic after a social media campaign is greater than 20 percent. If we would like to test the advertising agency's claim with a hypothesis test using a significance level of α = 0.015, what is the rejection region? Use the graph below to show the rejection region. First, move the blue dot to choose the appropriate test (left-, right, or two- tailed). Then, slide the shaded region(s) to represent the rejection region. Provide your answer below:
An Allied Health instructor at IVC was interested in comparing systolic blood pressure for vegetarian and nonvegetarian faculty and staff at IVC. Independent simple random samples of 85 vegetarians and 75 nonvegetarians resulted were collected. The summary statistics are presented in the table below. Is there compelling statistical evidence that the mean systolic blood pressure for vegetarians is lower than the mean systolic blood pressure for nonvegetarians? Use a significance value of 0.05. Two-Sample T-Test Standard Deviation Sample Mean Vegetarian Non- Vegetarian 85 124 39 75 139 40 Null Hypothesis, HO レ Alternative Hypothesis, H1 Test Statistic, t P-value く Significance level く Conclusion
Only one can be chosen
A certain polymer is used for evacuation systems for aircraft. It is important that the polymer be resistant tothe aging process. Fifty specimens of the polymer were used in an experiment. Twenty‐five were assignedrandomly to be exposed to an accelerated batch aging process that involved exposure to high temperatures for10 days. Question Which Treatment results in the higher mean tensile strength? (Circle One) Aging or No AgingWhich Treatment has the higher variability? (Circle One) Aging or No Aging
Listed below are systolic blood pressure measurements (mm Hg) taken from the right and left arms of the same woman. Assume that the paired sample data is a simple random sample and that the differences have a distribution that is approximately normal. Use a 0.10 significance level to test for a difference between the measurements from the two arms. What can be concluded? Right arm Left arm 143 179 OA. Ho: H0 H₁: Hd=0 OC. Ho: P = 0 H₁: Hd 0 sufficient evidence to support the claim of a difference in measurements between the two arms.

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