MATH 1280 Graded Quiz Unit 3 (100.0 OUT OF 100.0) University of the People

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Your answer is correct.The correct answer is: All shoppers at the Seattle Food Store.The sample in this survey was:CorrectSelect one:Mark 1.00 out of1.00a. Dominique and Huong.b. The people who were o... bserved shopping at the Seattle Food Store during the study.c. The people who wear rain jackets.d. The four hours per day that were studied.e. The 32 people per day who wore rain jackets to the Seattle Food Store.Your answer is correct. The correct answer is: The people who were observed shopping at the Seattle Food Store during the study.How would you describe the possibility that the sample was biased (read all answers and select the best one):CorrectSelect one:Mark 1.00 out of1.00a. There is no bias because the sample was large.b. There is no bias because the multiple days were sampled.c. There could be bias because the selected days might not be representative of all the days (such as changing weather).d. Not enough information to determine the answer.Your answer is correct.The correct answer is: There could be bias because the selected days might not be representative of all the days (such as changing weather). Use this information for the next four questions: Researchers wanted to know about a standardized test that was used across the country. Toget an estimate of the answer, they collected data from two classrooms of students who completed the test.Scores from Classroom A:8, 6, 9, 9, 8, 7, 8, 9, 10, 8, 10, 5, 4, 10, 9, 9Scores from Classroom B:9, 8, 7, 8, 9, 10, 9, 10, 7, 8, 10, 9, 9, 4, 6, 3The set of all scores on the standardized test across the country is:CorrectSelect one:Mark 1.00 out of1.00a. a statisticb. a parameterc. the sampled. the populationYour answer is correct.The correct answer is: the populationWhen all the scores for the two classrooms are added and divided by the number of observations, the resulting value is a:CorrectSelect one:Mark 1.00 out of1.00a. a statisticb. a parameterc. the sampled. the populationYour answer is correct.The correct answer is: a statisticWhat is the mean score in Group A?CorrectSelect one:Mark 1.00 out of1.00a. 8.4375 b. 8.3125c. 8.0625d. 8.375e. 8.4375 / sqrt(n)Your answer is correct.The correct answer is: 8.0625 Load data for Group B into an R object called B, then run this command:Correctbarplot(table(B))Mark 1.00 out ofWhat does the bar on the right represent?1.00Select one:a. Nine students received a score of 5 on the quiz.b. One student received a score of 6 on the quiz.c. Three students received a score of 7 on the quiz.d. Four students received a score of 9 on the quiz.e. Three students received a score of 10 on the quiz.Your answer is correct.The correct answer is: Three students received a score of 10 on the quiz. [Show More]

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