A marketing firm for Cobra Auto Security Systems mailed out a survey to 35% of the households in New York City, Washington DC, a
nd Chicago to determine the market for auto security systems. According to the respondents of the survey, 55% of the population uses public transportation and does not own an automobile. So, the marketing firm concluded that 55% of all Americans use public transportation and do not own an automobile. Which of the following statements is correct?
A. This method of sampling is neither biased nor unbiased.
B. This method of sampling can be considered both biased and unbiased.
C. This method of sampling is biased.
D. This method of sampling is unbiased.
1 answer:
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Answer:
Im pretty sure its A but not 100% sure-
Step-by-step explanation:
Area of a cylinder is pi*r^2*h
The radius is half the diameter.
So the radius is 3.5
3.14*3.5^2*7=269.255 cubic meters.
2 1/2 .need 20 characters to post
The ordered pair that describes the origin is (0, 0).
That's because x=0 and y=0 at the origin.
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