Posted by sylvia on Wednesday, August 25, 2010 at 8:57pm.
A statistician needs to survey a sample of 50 people that is representative of voters in his community. He prepared a list of phone numbers of 50 randomly selected, expected voters. Next morning, he came to work at 8:00 and began to make calls. By 11:00 a.m., his survey was done. Don't discuss what is not said. Discuss what is wrong with what is said.
really need help with this one!

staistics/ math  Ms. Sue, Wednesday, August 25, 2010 at 9:03pm
I'm not sure what your instructor is looking for in this problem.
However, I see several things wrong with this scenario. First, it's unethical or maybe just poor practice to make cold calls before 9 a.m. Second, it's hard to believe that he reached all 50 voters in a two or threehour period. The majority of voters are at work at this time of the morning.
Is there something else we should be discussing?

staistics/ math  sylvia, Wednesday, August 25, 2010 at 9:27pm
no, not the ethics, but from statistics stand point, what is wrong with reporting this as a legitimate survey? i don't understand the question either.

staistics/ math  Ms. Sue, Wednesday, August 25, 2010 at 9:39pm
Is 50 a large enough sample?
Are people listed in a phone book really a fair sample of registered voters?
Are phone calls likely to produce reliable results?

staistics/ math  Jen, Wednesday, August 25, 2010 at 9:44pm
Maybe it has something to do with the time he called? If he is calling all people without jobs, then it is not a representative sample.
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