Quiz: Quiz 2 (Chapters 6 11) Time Remaining 005900 submit Quiu This Question: 1
ID: 3234730 • Letter: Q
Question
Quiz: Quiz 2 (Chapters 6 11) Time Remaining 005900 submit Quiu This Question: 1 pt This Quiz: 37 pts possible Any time someone conducts a survey, they must take care to avoid undercoverage Suppose we plan to select 500 names from the oty phone book, call their homes between noon and4PM, and interiew whoever anticipating contacts with at least 200 people Complete parts a throughe bekow a) Why is it dificult to use a simple random sample here? O A. Not everyone has an equalchance. This system is based towards people with alast name that starts with a at the beginning the habe Not everyone has an equalchance. This system misses people with ur sted or without landline phones, or at work O C. Not everyone has an equal chance. This system misses houses that contain more than one adult b) Describe a more convenient, but stil random sampling strategy Choose the corect answer below o A. Lower the selected names to 30 and calin momingas we as in evening. O B. Approach and interview people on the street unti 500 people hawe been inteniewed O C. Call each number in the phone book until an adult is contacted and interviewed O D. Generate andom phone numbers and cal at random times c) What kinds of households are likely to be included in the eventual sample ofopinion? Excludedn excluded O A. Under the original plan, those tamilies in which one person stays home are more likely to be included Under the second plan allS00 people are included No one is 11.00Explanation / Answer
Question 33
(a) B. Not everyone has an equal chance. The system misses people with unlisted numbers, or without landline phones, or at work.
(b) B. Approach and interview people on the street untill 500 people have been interviewed (This ensures that people who do not have a landline no are also included at all times).
(c) A. Under the original plan, those families in which one person stays home are more likely to be included. Under the second plan 500 people are included. No one is excluded (it includes people who do not have a landline and who work at any time).
(d) C. It improves the chance of selected households being included (as those households with everyone working can pick up at any one time).
(e) D. This randomizes the phone numbers. The time of day may be an issue. People without landline phones are still excluded. (But with unlisted phone numbers are included.)
Question 34
(a) It is an experimental study as we experiment whether ice cold apple juice helps reduce severe back pain
(b) A. People experiencing severe back pain.
(c) C. Pain reliever and bevarage with 2 levels each.
(d) B. 2
(e) C. Level of pain relief
(f) B. Matched by pain relief. (If the pain is relived by apple juice or pill or its combination).
(g) B. Blind in regard to type of pill and beverage.
(h) B. Pain reliever alone or in combination with ice cold apple juice relieves severe back pain.
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