Curing diabetes: Vertical banded gastroplasty is a surgical procedure that reduces the volume of the stomach in order toproduce weight loss. In a recent study, 82 patients with Type 2 diabetes underwent this procedure, and 59 of themexperienced a recovery from diabetes. Does this study provide convincing evidence that less than 75% of those withdiabetes who undergo this surgery will recover from diabetes? Use the a=0.01 level of significance and the critical valuemethod.Part: 0 / 5Part 1 of 5State the appropriate null and alternate hypotheses.Họ:O

Given : Vertical banded gastroplasty is a surgical procedure that reduces the volume of the stomach…

Answered: Curing diabetes: Vertical banded…

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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Statistics students in Oxnard College sampled 10 textbooks in the Condor bookstore and recorded the number of pages in each textbook and its cost. The bivariate data are shown below: Number of Pages (xx) Cost(yy) 949 104.92 316 47.28 410 49.8 463 58.04 852 81.16 342 50.36 344 53.52 271 45.68 350 55 914 101.12 A student calculates a linear modelyy = + xx. (Please show your answers to two decimal places)Use the model to estimate the cost when number of pages is 298.Cost = $ (Please show your answer to 2 decimal places.)
Write the multiple regression equation for miles per gallon as the response variable. How might the car rental company use this model?
A scientist wants to know that is there an association between the age group (Young, Adult and elderly) and the level of complaint (Serious, Moderate and Light). Use Chi-squared hypothesis test for association to test that there is an association between the age group and the level of complaint with one percent level of significance. The scientist use MS excel and found that the Chi test stat is 12.875. Critical value: At 1% = 13.277 At 5% = 9.488 At 10% = 7.779 1. Conclusion and decision 2. State the decision rule 3. State the null and the alternative hypothesis
Define concept of IV Regression with Heterogeneous Causal Effects?
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DiabetesA group of 10-year-old boys were first ascertained in acamp for diabetic boys. They had their weight measuredat baseline and again when they returned to camp 1 yearlater. Each time, a serum sample was obtained from whicha determination of hemoglobin A1c (HgbA1c) was made.HgbA1c (also called glycosylated hemoglobin) is routinelyused to monitor compliance with taking insulin injections.Usually, the poorer the compliance, the higher the HgbA1clevel will be. The hypothesis is that the level HgbA1c isrelated to weight. The data in Table 11.28 were obtained.11.92 What test can be performed to assess the relationship between weight and HgbA1c at the initial visit?11.93 Please perform the test in Problem 11.92, and reporta two-tailed p-value.11.94 Do the results in Problem 11.93 imply a relationshipbetween change in HgbA1c and change in weight for anindividual boy? Why or why not?11.95 Compute a rank correlation between change inweight and change in HgbA1c, each over 1 year. Use this…
A researcher reports t(22) = 5.30, p <.01 for an independent-measures research. How many individuals participated in the entire experiment?
Model A: Y= β_0+β_1 X+ε Model B: Y= β_0+β_1 X+β_2 X^2+ε where Y = Earnings, X = Experience, and X Square dis Experience Squared Suppose now that we’ve squared X and added that to the model. Are the predictors significant in this model B? Explain. Is this a good model? Compare this model B to model A. Which model should you use for predictive analytics purposes? Why? Interpret the coefficients from Model B. Can we interpret the coefficients from Model B as a causal parameters?
Studies show that the level of anxiety has changed since the pandemic. The average score before the pandemic was mu equal to 36. A sample of 20 individuals surveyed in the past two weeks produced M=37.6 and s=9.8. Based on the sample, was there a significant difference in the average anxiety level since the pandemic started at the 5% significance level? What is the positive critical value? (a)2.093 (b)2.086 (c)1.729 (d)1.725
A linear regression model based on a random sample of 36 observations on the response variable and 4 predictors has a multiple coefficient of determination equal to 0.697. What is the value of the adjusted multiple coefficient of determination?
Statistics students in Oxnard College sampled 11 textbooks in the Condor bookstore and recorded the number of pages in each textbook and its cost. The bivariate data is shown below, Number of Pages (xx) Cost(yy) 942 59.1 453 24.65 789 41.45 473 34.65 302 25.1 567 23.35 482 32.1 511 26.55 285 28.25 529 35.45 477 19.85 Click to Copy-and-Paste DataA student calculates a linear modelyy = xx + . (Please show your answers to two decimal places)Use the model above to estimate the cost when the number of pages is 736Cost = $ (Please show your answer to 2 decimal places.)
Coom O Launch Meeting Zoom O Launch Meeting Zoom Check Your Understanding Die x 711f0308264d0cbd87b76a#screenldx=D2 ng High intracranial pressure (inside the skull) typically is a a. How many false positives were there among these 189 people? Explain the meaning of a false positive for the person tested. result of an injury to the head and can be very dangerous. A screening test for high intracranial pressure was proposed many years ago, based on the data in the following observations. This simple and non-invasive test involves observing the retinal vein to see if it is pulsating. Pulsation is normal and so would be considered a negative test result. Pulsation Absent Pulsation Present Total (Positive Test) (Negative Test) High Intracranial Pressure (Condition Present) Normal Intracranial Pressure b. How many false negatives were there? Explain the meaning of a false negative for the person tested. 43 43 (Condition Absent) 18 128 146 Total 61 128 189 Sources: B.E Levin, "The Clinical…

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