MAT 232 Homework week 1 2023 - Statistical Literacy

MAT 232 Homework week 1 2023 - Statistical Literacy. Forty adult men in the United States are randomly selected and measured for their body mass index (BMI). Based on that sample, it is estimated that the average (mean) BMI for men is 25.5 with a margin of error of 3.2 Use the given statistic and margin of error to identify the range of values (confidence interval) likely to contain the true value of the population parameter. The range of values likely to contain the population parameter is from 22.3 to 28.7. 25.5-3.2=22.3 25.5+3.2=28.7 3. What is a census, what is a sample, and what is the difference between them? A.A census is the collection of data from a large group of people, while a sample is the collection of data from a small group of people. In general, a census will contain data from at least 1000 people. B.A census is the collection of data from only a part of the population, but a sample is the collection of data from every member of the population. C.A census is the collection of data from every member of the population, but a sample is the collection of data from only a part of the population. Your answer is correct. D.A census is the collection of data from only the part of the population that gives the results that a researcher desires, while a sample is the collection of data from all parts of the population. E. A census is data collected by governments, but a sample is data collected by private researchers. 4. Determine whether a census is practical in the situation described. Explain your reasoning. You want to determine the mean height of all volleyball players in a height of all volleyball players in a country. A census is not practical. The po;ulation consists of the large number of players in a country and it is not easy to obrain their heights. 5. A magazine, which does not accept free products or advertising from anyone, prints a review of new cars. Are there sources of bias in this situation? Choose the correct answer below. There do not appear to be any sources of bias. Your answer is correct. There does appear to be sources of bias. 6. A company hires independent university scientists to determine whether its new, genetically engineered soybean poses any threat to the environment. Are there sources of bias in this situation? Choose the correct answer below. There does appear to be sources of bias. Your answer is correct. There do not appear to be any sources of bias. 7. IBM wants to administer a satisfaction survey to its current customers. Using their customer database, the company randomly selects 80 customers and asks them about their level of satisfaction with the company. What type of sampling is used? Cluster Systematic C. Simple random