Question 16 4.5 pts The table below is a result of a study for 3,000 students at Penn State University. Students were grouped into two groups - skipped many classes and skipped a few classes. The researchers took 5 SRS's and found their average GPA. GPA for a Few Classes Skipped GPA for Many Classes Skipped Difference After nding the differences between the GPA (GPA for Few Classes Skipped - GPA for Many Classes Skipped), what conclusion can you make from the table? 0 No conclusion can be made from the table. More data needs to be collected. 0 Since all of the differences were positive we can conclude that on average students that skip less classes have a higher GPA than students who skip many classes. 0 Since all the differences were negative we can conclude that on average students that skip less classes have a lower GPA than students that skip many classes. 0 Since all of the differences were small we cannot conclude that on average skipping many classes affects GPA. Question 17 4.5 pts You want to gure out the average shoe size of females in your school, but don't think you can contact all the females. - You decide to run a simulation to nd out the average shoe size of females in grades 9 - 12. - You let the numbers 5 - 13 represent the shoes sizes. - Using a random number generator you generate 50 numbers and calculate the average shoe size. What is one potential problem with this simulation? 0 This simulation is run correctly. You let each shoe size be equally represented. O This is not an appropriate situation in which to run a simulation. The best thing to do is to collect all of the data from the school. 0 In order to run this simulation you would need to plot the data on a dot plot to see where the average shoe size was located. 0 This is saying that every size of shoe is equally likely from size 5 to size 13. Not as many students have a size 13 shoe. Question 18 4.5 pts A questionnaire is sent out to a local community on a proposed real estate tax increase. This tax increase would help to counteract the rising educational costs for the local school. The following question was sent out to the community. . The Little Town School District has one of the lowest per student expenditure rates in the state. . This has resulted in high failure rates, low standardized test scores, and students are struggling to get into tests and colleges. Do you support the real estate tax increase in order to help fund the schools? Does the above question lead the reader to answer in one direction or the other? Why? 0 Since the question states that there have been high failure rates and asks the reader if they support the data the reader is most likely to answer yes. 0 Since the question states that there have been high failure rates and asks the reader if they support the data the reader is most likely to answer no. 0 Since the question states do you support the real estate tax increase it gives the reader the opportunity to answer yes or no. It does not lead the reader in one direction or the other. 0 Since the question is not given to a simple random sample of the population the results of the survey are meaningless. Question 19 4.5 pts In what way can a graph provide misleading information? O Not starting the vertical axis at 0. O Using pictures of the same size. O Creating a bar graph using different colors. O By make sure the data always adds up 100%.Question 20 4.5 pts When reading an article how will you know if you can make inference to a larger population? 0 If the article was written by a renowned scientist. 0 If the the sample was randomly chosen. Q If the article is written as an opinion piece. 0 When the question presented was not a leading question. Question 21 5 pts Your principal believes that students spend 2 hours on homework each night. However based on the amount of time you spend on Honors Math 3 you believe it's more than 2 hours. What is the null hypothesis and alternative hypothesis to represent this situation? Edit View Insert Format Tools Table 12pt v Paragraph v B I U A v .9 v T2 v Question 22 5 pts Your principal believes that students spend 2 hours on homework each night. However based on the amount of time you spend on Honors Math 3 you believe it's more than 2 hours. What is a type II error in this case? Edit View Insert Format Tools Table 12pt v Paragraph v B I U A v 49 v T2 v