The Following Scatterpolt Shows the Percentage of the Vote a Candidate

question 12

Multiple Choice

The following scatterpolt shows the percentage of the vote a candidate received in the 2004 senatoral elections according to the voter's income level based on an exit poll of the voters conducted bu CNN. The income levels 1-8 correspond to the followng income classes: 1=under $15,00; 2=$15-30,000; 3=$30-50,000; 4=$50=75,000; 5=$75-100,000; 6=$100-150,000; 7=$150=200,000; 8=$200,000 or more.
Use the election scatterplot to the find the critical values corresponding to a 0.01 significance level used to test the null hypothesis of P_s=0 .

• A) -0.881 and 0.881
• B) -0.881
• C) -0.738 and 0.738
• D) 0.881

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Definitions:

Mean

A statistical measure referring to the average value in a set of numbers, calculated by dividing the sum of all values by the number of values.

Range

In statistics, the difference between the highest and lowest scores in a distribution, indicating dispersion or variability.

Inferential Statistic

A set of methods used to make inferences or predictions about a larger population based on data collected from a smaller sample.

P Value

A statistical measure that helps scientists determine the significance of their research results, reflecting the likelihood that the observed data could occur by chance.