#4. A polling company is hired to find out how many voters in the city of El Pas
ID: 3456226 • Letter: #
Question
#4. A polling company is hired to find out how many voters in the city of El Paso intend to vote for Leslie Knope for mayor in an upcoming election. The pollster obtains a list of registered voters in El Paso, randomly selects 1,160 of them, and contacts them and learns how they intend to vote. 348 of them say they intend to vote for Leslie Knope. In actuality, the entire population of El Paso voters is 680,000, and of these 251,600 actually intend to vote for Leslie Knope. (a) What is the population of interest in this example? ____________________ (1 point) (b) What is the size of the population?________________________________________ (1 point) (c) What is the sample size?__________________________________________________ (1 point) (d) What is the size of ?_______________________________________ (2 points) (e) What is the size of for this poll?____________________________________ (2 points) (f) What is the sampling error for this poll?____________________________ (2 points)
Explanation / Answer
a. The population of interest in this example are the voters of El Paso.
b. The size of the population is 680,000 individuals.
c. The size of the same is 1,160 individuals.
d. & e. (Size of??)
f. The sampling error in the poll is the difference between a sample statistic used to estimate a population parameter and the actual but unknown value of the parameter. The sample’s result revealed that 30% of the voters supported Leslie Knope for the elections. The actual population statistics revealed that 37% of the voters supported here.
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