Chapter 7 Express Yourself opinion line bout the one-toay streets that h ay Of t
ID: 3184296 • Letter: C
Question
Chapter 7 Express Yourself opinion line bout the one-toay streets that h ay Of the 98 comments receioed, lbut ne-taay. tion do you think the bout? on of this population who favor one- most certainly larger or smaller than on in the sample? Why? Data for Decisions 271 on Wednesday education is a bachelor's degree. Think of these people a population. (a) To select an SRS of these people, how would you newspaper wants (b) Use Table 7.1 (p. 246), starting at line 107, to choose assign labels? the first three members of the SRS 411. In using Table 7.1 (p. 246) repeatedly to choose samples, you should not always choose the same row such as line 101. Why not? wants to gather student opinion tudent fee increase. It isn't praetical to of random digits and which are false? Explain your answers. 12. Which of the following statements are true of a table e of a way to choose a sample of poor practice because it depends on () The digits 0000 can never appear as a group because (a) There are exactly four Os in each row of 40 digits. (b) Each pair of digits has chance 1/100 of being 00. nse e of a bad way to choose a sample that ntary response this pattern is not random. ndom Samples en blessed with quadruplets (all select their names using an SRS he following list of the most 13. The last stage of the CPS uses a systematic sample. An example will iustrate the idea of a systematic sample. Suppose that we must choose 4 rooms out of the 100 rooms in a dormitory. Because 100/4-25, we can think of the list of 100 rooms as 4 lists of 25 rooms each. Choose 1 of the first 25 rooms at random, using Table 7.1 (p. 246). The sample will contain this room and the rooms 25, 50, and 75 places down the list from it. II 13 is chosen, to American girls born in the is, use Table 7.1 (p. 246), starting for example, then the systematic random sample consists of the rooms numbered 13, 38, 63, and 88. (a) Use Table 7.1 (p. 246) to choose a systematic random lison 3) Hannah 4) Emma is 7) Samantha 8) Sarah sample of 5 rooms from a list of 200. Enter the table at line 120. ia 11) Elizabeth 12 Alyssa (b) Your sample gives every room the same chance to be 16) Taylorchosen. Explain why 20) Anna e 15) Lauren 19) Isabella (e) Despite the answer in part (b), this sample is not an na SRS. Explain why ut and lining up several the eight-digit serial numbers14. An ethics institute selected a random sample of the telephone numbers on a tuts surveyed, 64 percent have cheated on a test, and ely 371 active telephone area known as a cluster sample. Why is this sample not an SRS 100 U.S. high schools and then gave an in-class survey to all students in each selected school. Of the 29,760 30 percent have stolen from a store. This type of sample is from the population of all U.S. high school students? ubstitute for Table 7.1? book? Explain. ions About Sample Surveys e United States, and some theeae coestora st the area codes to use Table 7.1? residential telephone numbers, and then the interviewer starting at line 125, to choose asks to speak with an adult member of the household to these area codes for a s 15. An opinion poll calls 1334 randomly chosen rs. How many movies have you watched in a movieExplanation / Answer
It will reduce randomness of you sampling and resulting over or under estimate of corresponding parameters.