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School

American Military University *

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302

Subject

Statistics

Date

Apr 3, 2024

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1

Uploaded by AdmiralWildcatPerson1030

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VAL A BV T R Y Elards) XY W @ 6¢ 65% @) < Back Week 8 Test © O { Back Question 14 0/ 1 point A public opinion poll surveyed a simple random sample of 550 voters in Oregon. The respondents were asked which political party they identified with most and were categorized by residence. Results are shown below. Decide if voting preference is independent from location of residence. Let a=0.05. Republican | Democrat | Independent NW Oregon 85 103 22 SW Oregon 45 66 10 Central Oregon 46 53 9 Eastern Oregon 67 33 11 Enter the P-Value - round to 4 decimal places. Make sure you put a 0 in front of the decimal. Answer: 11.89 x (0.0060) ¥ Hide question 14 feedback We are running a Chi-Square Test for Independence. Copy and Paste the table into Excel. You are given the Observed Counts in the table. Next you need to sum the rows and columns. Once you have those you need to calculate the Expected Counts. You need to find the probability of the row and then multiple it by the column total. Republican Democrat Independent Sum NW Oregon 85 103 22 210 SW Oregon 45 66 10 121 Central = ¢ 53 9 108 Oregon Eastern 67 33 11 111 Oregon Sum 243 255 52 550 Republican Democrat Independent =D GL* =L0*
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