A city council conducted a survey on speed bumps to see what residents preferred. The council asked every resident in one particular neighborhood what his or her preferences were. Were the results of the city council's survey valid?
No, because neighborhoods do not have speed bumps.
No, because the sample was not random.
Yes, because the neighborhood surveyed wanted speed bumps.
Yes, because every resident in a neighborhood was surveyed.
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OpenStudy (anonymous):
@perl
OpenStudy (anonymous):
@itsthatguy
OpenStudy (anonymous):
i'm here
OpenStudy (anonymous):
Yay!
OpenStudy (anonymous):
it looks like the 4th one because everything about that sentance is true
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OpenStudy (anonymous):
No. D was wrong.
OpenStudy (anonymous):
oh no, i'm so sorry
OpenStudy (anonymous):
It's ok
OpenStudy (anonymous):
it was B
OpenStudy (anonymous):
Canyou help me with another one?
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OpenStudy (anonymous):
yeah
OpenStudy (anonymous):
Awesome!
OpenStudy (anonymous):
Amy is doing a science experiment on how a certain bacterium reacts to an antibiotic. She has 3 dishes of identical bacterium samples with 13 bacteria in each dish. She gives an antibiotic to all of the bacteria in one dish. All of the treated bacteria died, and the bacteria in the other two dishes survived.
Identify the sample size in the situation above.
13
3
26
39
OpenStudy (anonymous):
I'm not really good with this kind of problem you displayed
OpenStudy (anonymous):
sorry
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