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- It is known from experience that in a certain indus-try 60 percent of all labor–management disputes are over wages, 15 percent are over working conditions, and 25percent are over fringe issues. Also, 45 percent of the disputes over wages are resolved without strikes, 70 per-cent of the disputes over working conditions are resolved without strikes, and 40 percent of the disputes over fringe issues are resolved without strikes. What is the probabil-ity that a labor–management dispute in this industry will be resolved without a strike?Imagine that you have arrived in Malate, Manila to conduct a case study onworking street children. A local social worker introduces you to two formerstreet working children and you leam that they still have lots of friends stillworking on the street. As a way to identify participants for your study, you askthe two former street working children if they can recommend and invite someof their friends on the street to participate in the study. You also ask them tospread word of the study in anticipation that their friends will also help you toidentify potential participants.How would you classify this kind of sampling? 1. Quota sampling? 2.Snowball sampling? 3. Random purposeful sampling? Explain your answer.Below are summaries of two studies exploring the dangers of texting while driving. Read eachsummary and then comment on which study, 1 or 2, you think provides stronger evidence that textingwhile driving is dangerous. Explain your reasoning by laying out the facts (identify the scientific studiesbeing done, potential errors, etc.) from these two studies and implications that led you to your conclusion. Study 1: Drivers in this study were between the ages of 16 and 54, and they performed on a closedcourse, with no other cars or pedestrians present. The idea of “danger” was measured by drivers’ reactiontime—the time from seeing a flashing yellow light until they applied the car breaks. The treatment condi-tions in this study were: sending text messages, reading text messages, and a control condition in whichdrivers completely focused on the road. Study 2: Drivers in this study were long-haul truck drivers, and their behavior was recorded using severalcameras inside the cab of their…
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- In an experiment to investigate a medication’s effect,researchers randomly assign 60 volunteers to receive10 mg, 20 mg, or 30 mg of the medication. What is oneof the limitations of this experiment?A) The conclusions will be questionable because thedesign has no blocking.B) The conclusions will be questionable because nogroup gets a placebo. C) The conclusions cannot be generalized to a popula-tion because the subjects are volunteers. D) The conclusions will be questionable because thereare only 20 subjects in each group.E) The conclusions will be questionable because eachsubject is not given all of the doses.The director of the MBA program at Salterdine University wants to develop a procedure to determine which applicants to admit to the MBA program. The director believes that an applicant’s undergraduate grade point average (GPA) and score on the GMAT exam are helpful in predicting which applicants will be good students. To assist in this endeavor, the director asked a committee of faculty members to classify 70 of the recent students in the MBA program into two groups: (1) good students and (2) weak students. The file MBAStudents.xlsm summarizes these ratings, along with the GPA and GMAT scores for the 70 students. What are the coordinates of the centroids for the good students and the weak students? Use XLMiner’s standard data partition command to partition the data into a training set (with 60% of the observations) and validation set (with 40% of the observations) using the default seed of 12345. Use discriminant analysis to create a classifier for this data. How accurate is this…Meteno’s products account for 59% of the U.S. snack chip industry, and there aremore than 45,000 Meteno employees in North America. In the late 1990s, despite itsoverall popularity, Meteno faced a general lack of appeal to Hispanics. In an effort tobetter penetrate that market, Meteno hired various market researchers to determinewhy Hispanics were not purchasing their products as often as company officials hadhoped and what could be done about the problem. In the studies, market researchersdiscovered that: Hispanics thought Meteno products were too bland, Metenoadvertisements were not being widely viewed by Hispanics, and Hispanics tended topurchase snacks in small bags at local grocery stores rather than in the large familystylebags sold at large supermarkets.Focus groups composed of male teens and male young adults—a group that tends toconsume a lot of chips—were formed. The researchers determined that even thoughmany of the teens spoke English at school, they spoke Spanish at home…
- Meteno’s products account for 59% of the U.S. snack chip industry, and there aremore than 45,000 Meteno employees in North America. In the late 1990s, despite itsoverall popularity, Meteno faced a general lack of appeal to Hispanics. In an effort tobetter penetrate that market, Meteno hired various market researchers to determinewhy Hispanics were not purchasing their products as often as company officials hadhoped and what could be done about the problem. In the studies, market researchersdiscovered that: Hispanics thought Meteno products were too bland, Metenoadvertisements were not being widely viewed by Hispanics, and Hispanics tended topurchase snacks in small bags at local grocery stores rather than in the large familystylebags sold at large supermarkets.Focus groups composed of male teens and male young adults—a group that tends toconsume a lot of chips—were formed. The researchers determined that even thoughmany of the teens spoke English at school, they spoke Spanish at home…Company has the head office at Kolkata and a branch at Mumbai. The personal director wanted to know if the workers at two place would like the introduction of new plan work and a survey was conducted for purpose. Out of 500 workers at Kolkata, 62% favoured the new plane. At Mumbai out 400 workers, 41% were against the new plan. Is there any significance difference between the two groups in their attitude towards the new plan at 5% level.construct a 5 step hypothesis testing, and pls answer the type of test (2nd picture) about this problem