
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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1) Can a single study with a single sample provide definitive proof about a behavior? Why or why not?
2) Briefly define
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- Which of the following is a form of systematic error? Chance. Type 2 error. Bias caused by the way people volunteer for a study. Type 1 error.arrow_forwardThere are three different ways I can go to work in the morning. I want to see if there is a difference in the distributions of travel-times between the three different ways. The sample data is depicted below. I claim there is a difference in mean travel times between the three different routes. I cannot guarantee that the distributions of these travel times are Normal. Travel Time in Minutes Interstate 22 22 21 23 22 21 Route 15 22 18 20 18 Back Roads 19 19 18 19 22 (a) Enter the rank values in the same order as in the original sample. Interstate Route 15 Back Roads (b) Give the value of the test statistic: (c) Test my claim at the 10% significance level.Enter the critical value: There is sufficient evidence to conclude that the population means are not equal.YesNo (d) Does your conclusion change at the 5% significance level?YesNoarrow_forwardDescribe a study in which you can use both nonparametric and parametric statistics. A researcher has participants expecting to receive either painful or mild electrical shocks during a study wait in a quarter-full waiting room with other participants. He then measures whether they choose to sit next to other participants or if they sit far away on their own. What is the best test to run for this study and why?arrow_forward
- 5. About 8% of Americans drop out of high school. About 30% of Americans are republicans. Therefore, the probability of someone being both a high school drop out and voting republican is 2.4%. Group of answer choices Correlation does not imply causation Variables aren’t independent (A|B =/= B|A) Highly improbable events tend to get famous There will likely be a self-reporting bias Terrible Survey Design: Biased question Terrible Survey Design: Sampling technique Terrible Survey Design: Small sample sizearrow_forwardThe area of inferential statistics called hypothesis testing is a decision-making process for evaluating claims about a population parameter, based on information obtained from samples. True or falsearrow_forward
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