n Exercises 1 and 2, identify the sampling technique used, and discuss potentio
ID: 3053761 • Letter: N
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n Exercises 1 and 2, identify the sampling technique used, and discuss potentio quality assurance, every fortieth toothbrush is taken from each our assembly lines and tested to make sure the bristles stay in sources of bias (ifany). Explain. the toothbrush. 2. Using random digit dialing, researchers asked 1200 U.s. adults their thoughts on health care reform. 3. In 2012, a worldwide study of all airlines found that baggage delays were caused by arrival mishandling (4%), failure to load (15%), loading error (5%), space-weight restriction (7%), tagging error (3%), transfer mishandling (53%), and ticketing error/bag switch/security/other (13%). Use a Pareto chart to organize the data. (Source: Society International de Telecommunications Acronautics) In Exercises 4 and 5, determine whether the numerical value is a parameter statistic. Explain your reasoning or a 4. In 2012, the average salary of a Major League Baseball player was $3.213,479. (Source: Major League Baseball) 5. In a survey of 1000 likely voters, 10% said that First Lady of the United States Michelle Obama will be very involved in policy 6. The mean annual salary for a sample of electrical engineers is $83,500, with (a) Use the Empirical Rule to estimate the percent of electrical engineers (b) In a sample of 40 additional electrical engineers, about how many decisions. (Source: Rasmussen Reports) a standard deviation of $1500. The data set has a bell-shaped distribution. whose annual salaries are between $80,500 and $86,500. electrical engineers would you expect to have annual salaries between $80,500 and $86,500? (c) The salaries of three randomly selected electrical engineers are $90,500, $79,750, and $82,600. Find the z-score that corresponds to each salary Determine whether any of these salaries are unusual. In Exercises 7 and 8, identify the population and the sample. 7. A survey of 1009 U.S. adults found that 26% think higher education is affordable for everyone who needs it. (Source: Gallup) 8. A study of 61,522 prescription drug patients found that patients were likely to be persistent in refilling their prescriptions when the pill chan color. (Source: Journal of the American Medical Association) In Exercises 9 and 10, determine whether the study is an observational study or on experiment. Explain. 9. To study the effect of a new stroke prevention device on people wir irregular heartbeats, 269 people received the device and 138 people recei a usual treatment (blood thinner). (Source: U.S. National Institutes of Healh 10, In a survey of 353,564 adults, 29.3% said that at some point they diagnosed with high blood pressure. (Source: Gallup) R 2 DESCRIPTIVE STATISTICSExplanation / Answer
Dear student you have to post one question at a time
For 11 and 12
11 is a quantitative variable and
12 is a qualitative variable
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