rkStyleGuide (1) - WordSearchencesMailingsReviewViewHelpAcrobatO Findav Po田、而、新。AaBbCcD AaBbCcD AaBbC AaBbCcC AaBS ReplA Sele1 Normal三国===、、田、1 No Spac. Heading 1Heading 2TitleParagraphStylesEditin3. As we have seen in class, hypothesis testing, and confidence intervals are the mostcommon inferential tools used in statistics. Imagine that you have been tasked withdesigning an experiment to determine reliably if a patient should be diagnosed withdiabetes based on their blood test results. Create a short outline of your experiment,including all the following:a. A detailed discussion of your experimental design. Detailed experimentaldesign should include the type of experiment, how you chose your samplesize, what data is being collected, and how you would collect that data.b. How is randomization used in your sampling or assignment strategy?Remember to discuss how you would randomize for sampling andassignment, what type of randomization are you using?c. The type of inferential test utilized in your experiment. Include type of testused, number of tails, and a justification for this choice.d. A formal statement of the null and alternative hypothesis for your test. Makesure to include correct statistical notation for the formal null and alternative,do not just state this in words.B.amazon-> AaBbCcD AaBbCcD AaBbC AaBbCcC AaB1 Normal1 No Spac. Heading 1Heading 2TitleParagraphStylese. A confidence interval for estimating the parameter in your test. State anddiscuss your chosen confidence level, why this is appropriate, and interpretthe lower and upper limits.f. An interpretation of your p value and confidence interval, including whatthey mean in the context of your experimental design. Answer each partbelow. State your significance level, interpret your p-value, and make adecision on the null.В.立

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Answered: 3. As we have seen in class, hypothesis…

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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According to a study completed in 2006 by Pew Internet, 42% of all Americans had a broadband Internet connection at home. This same statistics student wanted to see if this percentage is different for students at his university. Ho: p = 0.42 Ha: p ≠ 0.42 Based upon the data the student collected, a 95% confidence interval for p was found to be: (0.439, 0.457). At the 0.05 level of significance, which conclusion can be made? a. The student should reject the null hypothesis, because 0.42 is a possible value for p given the data collected. b. The student should not reject the null hypothesis, because 0.42 is not a possible value for p given the data collected. c. The student should reject the null hypothesis, because 0.42 is not a possible value for p given the data collected. d. The student should not reject the null hypothesis, because 0.42 is a possible value for p given the data collected.
Gallup is a company that conducts daily opinion polls on a variety of topics. In a recent daily survey of 1,000 randomly selected adults in the United States, 38% of the sample said they were committed to their work. Based on this sample, which of the following is a 97% confidence interval for the proportion of all adults in the United States who would say they are engaged in their work? Select one: a. (0.347, 0.413) b. (0.319, 0.441) c. (0.350, 0.410) d. (0.365, 0.395) e (0.340, 0.420)
4. Ten students on a low-fat diet designed to lower their cholesterol and recorded their before and after diet data in the following table: Before diet cholesterol level: After diet cholesterol level: 140 140 220 230 110 120 240 220 200 190 180 150 190 200 360 300 280 300 260 240 Based on a 95% confidence level, after hypothesis testing, what would you tell the students about the diet? Does the null hypothesis reject H0 or fail to reject H0?
A national opinion poll found that 44% of all American adults agree that parents should be given vouchers that can be applied toward their children's education at any public or private school of their choice. The result was based on a small sample. A)How large an SRS is required to obtain a margin of error of at most 0.03 in a 99% confidence interval? B) Answer the question in part A again but this time By using Phat=0.5. By how much do the two sample size differ?
After reporting the results from a formal hypothesis test, it is often likely that statisticians will report a confidence interval in order to indicate that a null value is present, indicating a significant response . True False
A two-tailed hypothesis test for H0: μ = 20 at α = 0.10 is analogous to asking if a 90 percent confidence interval for μ contains 20: True False
. A researcher collects a sample of 24 measurements from a population and wishes to find a 99% confidence interval for the population mean. What value should he use for t*? b. If he instead decides to use a 95% confidence interval, will the interval be wider or be narrower or stay the same? Why?
A Gallup poll asked a sample of Canadian adults if they thought the law should allow doctors to end the life of a patient who is in great pain and near death if the patient makes a request in writing. The poll included 250 people in Quebec, 198 of whom agreed that doctor-assisted suicide should be allowed.(a) What is the margin of error of the large-sample 99.9% confidence interval for the proportion of all Quebec adults who would allow doctor-assisted suicide? MoE:(b) How large a sample is needed to get a±3 percentage point margin of error (this is very commonly used)? Use the previous sample as a pilot study to get p*. (You may need four decimal places in your critical value to solve this problem.)Sample size:
In general, would you expect a 90% confidence interval on μ to be longer or shorter than a 95% confidence interval based on the same sample?
1.Suppose you reject the null hypothesis, use the LSD method to compare the difference in the meantime taken to find their first full-time job for Business and Computer Science graduates using 95% confidence interval. a) [-2.036, 37.750] b) [0.023, 26.370] c) [2.036, 37.750] d) [-0.023, 36.770] 2
A statistics student wants to conduct a study to determine the proportion of workers in Cititon who commute to another town for work. If the student wants a 90% confidence interval with a margin of error of 2%, how many workers should be in her sample?
Suppose that a safety group surveyed 800 drivers. Among those surveyed, 83% said that careless or aggressive driving was the biggest threat on the road, and 34% said that cell phone usage by other drivers was the driving behavior that annoyed them the most. Based on these data and assuming that the sample was a simple random sample, construct and interpret a 95% confidence interval estimate for the true proportion in the population of all drivers who are annoyed by cell phone users. The confidence interval estimate is ??––––––?? (Round to three decimal places as needed. Use ascending order.) Interpret the confidence interval estimate. A. There is a 0.95 probability that the population proportion of drivers who are annoyed by cell phone users is in the interval. B. There is 95% confidence that the population proportion of drivers who are annoyed by cell phone users is in the interval. C. There is a 0.95 probability that the sample proportion of drivers…

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