Mathematics, 16.07.2019 17:00 anthmel07

Which of the following would decrease bias when selecting a sample for a controversial political survey? a. survey only registered voters b. conduct the survey on the internet c. advertise for participants on talk radio d. ensure that individual responses are confidential

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Answer from: thao5160

The correct option is A.
In survey sampling, bias is defined as the tendency of the chosen sample to over estimate or under estimate a population parameter. Bias is said to occur when the used sample does not accurately represent the population concerned; a good sample should be representative. There are different types of bias, depending on how they arise. When selecting a sample for controversial political survey, choosing participants from registered voters only will decrease the bias of the sampling.

Answer from: Quest

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step-by-step explanation:

Answer from: Quest

54 km / hours

step-by-step explanation:

we need to convert seconds to hours

60 seconds = 1 minutes

60 minutes = 1hour

15 m 60 second 60 minutes

* * = 54000 meters/ hour

second 1 minute 1 hour

now we need to convert meters to km

1000 m = 1 km

54000 m 1 km

* = 54 km / hours

hour 1000m

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Which of the following would decrease bias when selecting a sample for a controversial political sur...

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