E GnogleDocs x Calendar x + O _ P X (- a C i hnsz/wvm.instmcture.com/calendar#view,name=mon1h&view,slart:2021710709 35, j. g Cota midtermdocx Math 10 71738 Midterm 1 Name Stu ID A psychological study explored whether playing violent video games made people more aggressive toward other people. 200 college students volunteered for the study. Half were randomly assigned to watch a violent video game called "Wolferstein 3D". The other half were randomly assigned to play a non-violent video game called \"Myst". Then the students were asked to play a two person competitive game in they were told they could punish the other player by subjecting them to a loud blast of noise. The students who had played the violent video game punished their opponents more often, and more severely, than the students who had played the non-violent video game. The researchers concluded that violent video games caused aggressive behavior. Answer "TRUE" or "FALSE" to each question: This is a designed experiment (controlled experiment). TRUE FAISE This study will probably have a problem with response bias. TRUE FALSE The researchers who organized the study were the control group. TRUE FALSE This study will probably have a problem with lurking variables. TRUE FALSE Find C11 and C13 for the following data: 20 15 30 18 6' 11:31 Google Docs X Calendar X + X > C a https://wvm.instructure.com/calendar#view_name=month&view_start=2021-10-09 Cota midterm.docx & Download i Info X Close Page 1 of 4 - ZOOM + 3 Calculate the standard deviation for the following data: 11 4 6 8 6 Assume that the data is a sample, not the entire population. 1 7 9 11:31Google Docs X Calendar X + X > C https://wvm.instructure.com/calendar#view_name=month&view_start=2021-10-09 Cota midterm.docx & Download i Info X Close Page 2 of 4 O - ZOOM + 4 Use the following data for problem 4 X y x2 yz X.Y 0 10 3 10 7 9 10 8 12 8 4.a Make a scatter plot. 4.b Calculate the slope and intercept of the best fit line. 1 7 9 11:31Google Docs X Calendar X + X > C a https://wvm.instructure.com/calendar#view_name=month&view_start=2021-10-09 Cota midterm.docx & Download i Info X Close Page 2 of 4 O ZOOM + 4.C Write the equation of the best fit line. 4.d Predict the most likely value of y for x = 8. 4.e Would it be reasonable to predict y for x = 11? To get full credit give a reason for your answer. 4.f Calculate r, the correlation coefficient. 4.8 Based on your answer to 4.f, what proportion of the variability in y is explained by the relationship between x and y? 1 7 9 11:31Google Docs X Calendar X + X -> C a https://wvm.instructure.com/calendar#view_name=month&view_start=2021-10-09 Page 3 > of 4 O ZOO 5 A data set has the following five number summary: Minimum = 0 Q1 = 8 median = 14 Q3 = 20 maximum =39 Is the maximum value (x = 39) an outlier? To get full credit, you must show the test for the number being an outlier. 1 7 0 11:32Google Docs X Calendar X + X > C a https://wvm.instructure.com/calendar#view_name=month&view_start=2021-10-09 Cota midterm.docx Download 1 Info X Close Page 3 of 4 ZOOM + 6 A hospital screens all newborn infants for a treatable disease. The probability that an infant will test positive is 0.02, and the probability that an infant both tests positive and also has the disease is 0.001. Given that an infant tests positive, what is the probability that the infant actually has the disease? 1 7 0 11:32Google Docs X Calendar X + X > C a https://wvm.instructure.com/calendar#view_name=month&view_start=2021-10-09 Cota midterm.docx Download 1 Info X Close Page 4 of 4 ZOOM + 7 In a certain year, the population mean score for high school students taking the SAT exam is normally distributed with population mean u = 490 and population standard deviation o = 100. What proportion of the students score between 190 to 790? 8 Use the following data for problem 8. 23 15 27 15 20 19 15 21 32 31 24 8.a Calculate the mean. 8.b Calculate the median. 1 7 0 11:32Google Docs X Calendar X + - X -> C a https://wvm.instructure.com/calendar#view_name=month&view_start=2021-10-09 8.c Find the mode. 11 12 13 14 15 16 1 7 4 11:32