21. a scientist wants to find out what sports...
21. a scientist wants to find out what sports people in arvada like watching the most. which situation would produce the most reliable, unbiased results? a) surveying 50 spectators at a soccer game b) surveying every 5th person to enter into the apex recreation center c) surveying only females applying for their drivers license in the arvada dmv d) surveying every 15th household in arvada through the mail 22. which of the following is not part of a well - written procedure? * a) it is numbered b) it includes the units that you should use for any measurements. c) it says to repeat the experiment as many times as you want. d) it is easy to follow.
Answer
# Brief Explanations:
For question 21, surveying every 15th household in Arvada through the mail is likely to be the least - biased as it has a wider and more random sample of the population. Surveying spectators at a soccer game (A) is biased towards soccer fans, surveying people at a recreation center (B) is biased towards those who use that center, and surveying only females at the DMV (C) is a non - representative sample.
For question 22, a well - written procedure should have a clear number of times to repeat an experiment for reliability, not just say "as many times as you want". Numbering (A), including units (B), and being easy to follow (D) are all important parts of a well - written procedure.
# Answer:
21. D. Surveying every 15th household in Arvada through the mail
22. C. It says to repeat the experiment as many times as you want.