Facebook has created a new algorithm that is built to detect terrorists in the US by looking at relationships within the data. Currently 200,000,000 people use the platform in the US. 0.001% of people in the US are legitimate terrorists. The Facebook algorithm correctly identifies terrorists 93% of the time. The algorithm incorrectly identifies regular citizens as terrorists 0.07% of the time. How many people are a) Terrorists? b) Not Terrorists? c) Terrorists Identified by the Facebook algorithm? d) Terrorists not Identified by the Facebook algorithm? e) Citizens not Identified by the Facebook algorithm? f) Citizens Identified by the Facebook algorithm?

Update A certain company offers in-home cral HIV testing. According to their website, out of 4,998 persons who were unaware of their HIV status, 96 persons were HIV positive and 4,902 were HIV negative (as determine by an indeperdent lab test). For 4,901 out of the 4902 persons who were HIV negative, he company's test correctly predicted such a negative result, but incorrectly predicted a positive result for the one remaining person. Of the 96 persons were HIV positive, the company's test correctly predicted a positive result for 90 of them and a negative result for the others. These results can be summarized in the table below Pos Neg Total HIV 90 6 96 No HIV 4,901 4,902 Total 91 4,907 4,998 Find the estimated sensitivity of the company's test for the population that the sample of 4,998 represents. (Round to four decimal places as needed.)

What are some ways to ensure that respondent information is kept anonymously? Select all that apply. U Start with coding the respondent's name so that information cannot be tracked to a name or other identifying data. Store the data in a system that is locked with passwords, such as an Excel spreadsheet or other database. Store hard-copy data (such as surveys) in a locked cabinet that is only accessible by one or two researchers. O Have respondents use pseudonyms.

To help plan the number of meals to be prepared in a college cafeteria, a survey was conducted, and the following data were obtained. 132 students ate breakfast.175 students ate lunch.270 students ate dinner.69 students ate breakfast and lunch.111 students ate breakfast and dinner.90 students ate lunch and dinner.53 students ate all three meals. How many students ate (a) At least one meal in the cafeteria?=__students(b) Exactly one meal in the cafeteria?=__students

Find the mode of the following number of states randomly selected travelers at a service plaza visited in the past three years. 18,13,8,8,13,10,13,10,9,18.

In a series of studies, Sebastian Deri and his colleagues (2017) asked multiple groups about the number of friend groups they had and how often they attended different social events. They then asked participants how they thought their own numbers compared to other people's: Did participants see themselves as less social, the same as, or more social than others? In the first study, the researchers reported that: "Three hundred four participants from Amazon's Mechanical Turk (150 women; Mage = 37.1; 78% White, 10% Black, and 6% Asian) completed a survey in exchange for modest payment" (p. 860). What do the researchers mean by "Amazon's Mechanical Turk" with respect to their sample of participants? O A. An archival data set that already exists and from which researchers can use data O B. An online tool that researchers can use to recruit people to participate in research in exchange for a small payment O C. An e-book sold by Amazon that includes contact information for possible…