Which of the following misuses of statistics is possible when we make type II errors, but not if we make type I errors? False causality Biased samples Overgeneralization Proof of the null hypothesis Data dredging

Which of the following misuses of statistics is possible when we make type II errors, but not if we make type I errors? False causality Biased samples Overgeneralization Proof of the null hypothesis Data dredging

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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A one-way ANOVA is called "one-way" because of which of the following it predicts the outcome variable using one predictor variable multiple predictor variables can be used, but they all only predict one outcome variable. there's only one way to do it No answer text provided.
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S 3 Outcome Efficacy Knowledge Rape myth acceptance Illinois Rape Myth Date Rape Myth Bystander attitudes Decisional balance (N=108-110) (N=128-129) 7.54*** -6.86*** 0.60 0.51 1.66 -1.51 -0.85 3.23** **p < 0.01, ***p < 0.001, two-tailed significance. 6.07*** -2.91** -9.09*** -5.63*** (N=123-124) 8.49*** -12.67*** 10.25*** -5.42*** -12.29*** -5.80*** Answer the following questions: 1. According to the data, was a statistically significant difference found in the pretest and posttest efficacy scores for those that did not participate in the program? Explain. 2. According to the data, was a statistically significant difference found in the pretest and posttest efficacy scores for those that attended one session of the program? Explain. 3. According to the data, was a statistically significant difference found in the pretest and posttest efficacy scores for those that attended three sessions of the program? Explain. 4. Explain how the results in the table can be used to justify the overall…
Bias in Clinical Trials? Researchers investigated the issue of race and equality of access to clinical trials. The table below shows the population distribution and the numbers of participants in clinical trials involving lung cancer (based on data from "Participation in Cancer Clinical Trials," by Murthy, Krumholz, and Gross, Journal of the American Medical Association, Vol. 291, No. 22). Use a 0.01 significance level to test the claim that the distribution of clinical trial participants fits well with the population distribution. Race/ethnicity Distribution of Population Number in Lung Cancer Clinical Trials a) Test Statistic: b) Critical X²: c) P-Value: d) Conclusion: There Participation in Cancer Clinical Trials White non- hispanic 75.6% 3855 Hispanic Black 9.1% 60 sufficient evidence to support the claim. 10.8% 316 Asian/Pacific Islander 3.8% 54 American Indian/Alaskan Native 0.7% 12
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Using statistical terminology, data sets, and various graphical displays, please provide a scenario that will satisfy all of the following conditions.
Response bias occurs when respondents consciously or unconsciously misrepresent the truth Othe research task is improperly conducted or executed Individuals in the sample are somehow systematically different from the overall population in some significant way. respondents who have a strong opinion about the survey topic are more likely to respond
Random digit dialing telephone surveys used to exclude cell phone numbers. If the opinions of people who have only cell phones differ from those of people who have landline service, the poll results may not represent the entire adult population. The Pew Research Center interviewed separate random samples of cell-only and landline telephone users who were less than 30 years old. Here’s what the Pew survey found about how these people describe their political party affiliation. Do we reject, or fail to reject, the null hypothesis?
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Do men and women select different breakfasts? The breakfasts ordered by randomly selected men and women at a popular breakfast place are shown below. Frequencies of Breakfasts for Men and Women French Toast Pancakes Waffles Omelets Men 81 59 84 87 Women 114 75 104 58 What can be concluded at the αα = 0.05 significance level? What is the correct statistical test to use? Goodness-of-Fit Paired t-test Independence Homogeneity What are the null and alternative hypotheses?H0:H0: The distribution of breakfast ordered for men is the same as it is for women. The distribution of breakfast ordered for men is not the same as it is for women. Breakfast ordered and gender are dependent. Breakfast ordered and gender are independent. H1:H1: The distribution of breakfast ordered for men is not the same as it is for women. Breakfast ordered and gender are independent. The distribution of breakfast ordered for men is the same as it is for women. Breakfast ordered and gender…
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II wu.aleks.com A Students Home 6McGraw Hill Campus A ALEKS-Anna Bergstr... Untitled O CONFIDENCE INTERVALS AND HYPOTHESIS TESTING Hypothesis test for the population mean: t test using the critical... SAC A Du A coin-operated drink machine was designed to discharge a mean of 6 fluid ounces of coffee per cup. In a test of the machine, the discharge amounts in 22 randomly chosen cups of coffee from the machine were recorded. The sample mean and sample standard deviation were 5.88 fluid ounces and 0.24 fluid ounces, respectively. Españot If we assume that the discharge amounts are approximately normally distributed, is there enough evidence, to conclude that the population mean discharge, u, differs from 6 fluid ounces? Use the 0.10 level of significance. Perform a two-tailed test. Then complete the parts below. Carry your intermediate computations to three or more decimal places. (If necessary, consult a list of formulas.) (a) State the null hypothesis H and the alternative hypothesis H.…