Question 1 3 pts Each of the 30 MLB teams has 28 players. A sample of 60 players is to be chosen as follows. Each team will be asked to place 28 cards with their players' names into a hat and randomly draw out two names. The two names from each team will be combined to make up the sample. Which of the following best describes this sampling method? 0 Stratied Sampling 0 Simple Random Sample 0 Cluster Sample 0 Systematic Sample The CEO of a large company wants to determine whether the salespeople would prefer a new bonus program to the existing bonus program. The company has over 30,000 salespeople working in large cities and 10,000 salespeople working in rural areas. The CEO will select a sample of 200 salespeople from all the salespeople to ask their opinions about the new bonus program. What is the advantage of selecting a stratied random sample with location as strata, instead of a simple random sample? C) The stratied sample assures salespeople that the new bonus program will not be implemented until their opinions are recorded. 0 The stratied sample assures that the opinions of salespeople from both locations will be represented. O The stratied sample will be less expensive to implement and will save the company time and money. 0 The stratied sample assures the most random selection. Question 3 3 pts A large city has 5 high schools, East, West, North, South, and Central. The number of teachers in each of these high schools is 112, 152, 146, 202, and 225 respectively. A sample of 20 teachers will be selected. Of the following descriptions of sampling procedures, which is most likely to introduce a potential source of bias? 0 Randomly select 4 teachers from each high school. 0 Obtain a list of all teachers from all high schools and label each teacher with a number between 001 and 837. Randomly select a number between 01 and 40. Select the teacher associated with this number and also every 40th teacher on the list following this number. 0 Randomly select 20 teachers from East High School 0 Divide all teachers by the subject they teach (Math, Science, English, History, and Arts) and randomly select 4 teachers from each subject. A farmer has a corneld containing about 300,000 corn plants. He divides the eld into 12000 regions of 25 plants each. He then uses the random number generator to randomly select 20 regions and checks each of the 25 plants in those regions for disease. Which of the following best describes this sampling method? 0 Stratied Sample 0 Cluster Sample 0 Simple Random Sample 0 Systematic Sample Question 5 3 pts An educational researcher wants to determine how high school students in Chicago feel about online learning. The researcher plans to administer a survey to a sample of high school students. Which of the following samples is most likely to generalize to the population of interest? 0 A sample of high school students in Chicago 0 A sample of high school students in Illinois 0 A nationwide sample of high school students 0 A sample of high school students from the Illinois Mathematics and Science Academy located in Chicago. Question 6 3 pts The financial aid office at the University of Virginia asks a sample of students about their employment and earnings. The report indicates a significant difference was found between the sexes, the men earning more on average than women. Is this an example of an Observational Study or an Experiment? O Observational Study O Experiment