MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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- Research study comparing alcohol use for college students in the United States and Canada reports that more Canadian students drink but American students drink more. Is this study an example of an experiment? Answer yes or no and why or why not. Write two answers for this question. If one answer is wrong, the entire answer is wrong.
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- A crossover trail is a type of experiment used to compare two drugs. Subjects take one drug for a period of time, then switch to the other. The responses of the subjects are then compared using matched pair methods. In an experiment to compare two pain relievers, seven subjects took one pain reliever for two weeks, then switched to the other. They rated their pain level from 1 to 10, with larger numbers representing higher levels of pain. The results are listed below. Can you conclude that the mean pain level is more with drug B? Use the 0.05 level and the p- values method.arrow_forwardChildhood vaccinations: In January 2015, the Pew Research Center reported results from one of their surveys. “Asked about whether vaccines for childhood diseases such as measles, mumps, rubella (MMR) and polio should be required or left up to parental choice, 68% of adults say such vaccines should be required while 30% say that parents should be able to decide whether or not to vaccinate their children.” The following is an excerpt from the press release: The survey of the general public was conducted using a probability-based sample of the adult population by landline and cellular telephone Aug. 15-25, 2014, with a representative sample of 2,002 adults nationwide. The margin of sampling error for results based on all adults is plus or minus 3.1 percentage points. Source: C. Funk and L. Raine. Public and Scientists’ Views on Science and Society (2015) Which of the following statements is correct when interpreting the 95% confidence interval for these findings? 1. We are 95%…arrow_forwardIf in a population 60% of people own an iPhone, 45% of people own an Android phone, and 37% own both types of phone. Are "owning an iPhone" and "owning an Android" independent outcomes? Cannot tell from the given information. Yes, they are independent. No, they are dependent.arrow_forward
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- Two different blood pressure medicines are being compared to determine if the average reduction in blood pressure is the same for each medication. The goal of the study is to determine if the medications differ. Twenty men age 50-60 years old are selected for the study. Ten men are chosen at random to receive the first medication and the other 10 men receive the second medication. Each of the 20 men is monitored for one month to determine the change in blood pressure over that time. Minitab provides the 95% confidence interval for (mu1 - mu2) (2.63, 14.18) a. Interpret this 95% CI. b. What assumptions (be specific) are necessary to construct this CI?arrow_forwardTaste test. Some people claim that they can tell the difference between a diet soda and a regular soda in the first sip. A researcher wanting to test this claim randomly sampled 80 such people. He then filled 80 plain white cups with soda, half diet and half regular through random assignmentand asked each person to take one sip from their cup and identify the soda as diet or regular. 48 participants correctly identified the sodaIf the research question is "Are these people any worse or better than random at determining whether the soda is diet or regular?" then what is the corresponding p-value?arrow_forwardwould this be a one tail or two tail test?arrow_forward
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