17. A randomly selected sample of 400 students at a university with 15-week semesters was asked whether ornot they think the semester should be shortened to 14 weeks (with longer classes). Forty-six percent (46%)of the 400 students surveyed answered "yes." Which one of the following statements about the number 46%is correct?a) It is a sample statistic.b) It is a population parameter.c) It is a margin of error.d) It is a standard error.18. A hypothesis test is conducted and the p-value of the test statistic is 0.02. Four of the following statementsare valid. Which statement is not valid?a) It is not very likely that the extremeness of the test statistic is due to chance.b) Assuming the null hypothesis is true, there is a 2% chance of getting a more extreme teststatistic.c) There is a 2% chance that the null hypothesis is false.d) At the 0.05 significance level, you would reject the null hypothesis.c) At the 0.01 significance level, you would fail to reject the null hypothesis.4.@ 上弗

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Answered: A randomly selected sample of 400…

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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The General Social Survey is an annual survey given to a random selection of about 1500 adults in the United States. Among the many questions asked are "What is the highest level of education you've completed?" and "If you're employed full-time, how many hours do you spend working at your job during a typical week?" In a recent year, 1116 respondents answered both questions. The summary statistics are given in the chart below. (The sample data consist of the times, in hours per week, that were given by the respondents.) Sample Sample Sample Groups size mean variance Less than 281 41.6 115.8 h.s. High school 260 43.3 96.3 Bachelor's 294 42.5 100.5 Graduate 281 44.2 108.2 Send data to Excel Based on these summary statistics, we perform a one-way, independent-samples ANOVA test to determine if there is a difference in the mean hours worked in a typical week among the four populations of workers. (a) The results of this ANOVA are given in the incomplete ANOVA table below. Complete the…
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