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10 Nov 2019
A newly-premiered play just ended that evening at a local theater. Theater management briefly interviews every seventh person leaving the theater to see if that person will recommended the play at that theater to other people. Identify the type of sampling used in this example. Explain the difference between a census and a sample. Explain why statisticians generally to use a sample to make predictions concerning the entire population. Explain the difference between a cluster sample and a stratified sample. A statistics student takes a poll on her campus to find out which presidential candidate the sample of students favors. She polls every fourth person that walks into the library. Why wouldn't this sample be representative of the entire student body? Just prior to a gubernatorial election, a survey of 1000 randomly selected likely voters is conducted to determine the level of support for the Democrat and Republican candidates for governor. The results are as follows: 38% favor the Democrat candidate. 23% prefer the Republican candidate, and 39% are undecided. Based on these results, and assuming that the survey was unbiased, would you feel comfortable concluding that the Democrat candidate will win the election? Explain.
A newly-premiered play just ended that evening at a local theater. Theater management briefly interviews every seventh person leaving the theater to see if that person will recommended the play at that theater to other people. Identify the type of sampling used in this example. Explain the difference between a census and a sample. Explain why statisticians generally to use a sample to make predictions concerning the entire population. Explain the difference between a cluster sample and a stratified sample. A statistics student takes a poll on her campus to find out which presidential candidate the sample of students favors. She polls every fourth person that walks into the library. Why wouldn't this sample be representative of the entire student body? Just prior to a gubernatorial election, a survey of 1000 randomly selected likely voters is conducted to determine the level of support for the Democrat and Republican candidates for governor. The results are as follows: 38% favor the Democrat candidate. 23% prefer the Republican candidate, and 39% are undecided. Based on these results, and assuming that the survey was unbiased, would you feel comfortable concluding that the Democrat candidate will win the election? Explain.
Beverley SmithLv2
10 Nov 2019