Chi Square: Goodness of Fit RIDDLE: Why do so many marriages end in failure? Dir

Question

Chi Square: Goodness of Fit RIDDLE: Why do so many marriages end in failure? Directions: To find the answer to the riddle, write the answers to the problems on the lines. The word in the solution section beside the answer to the first problem is the first word in the answer to the riddle, the word beside the answer to the second problem is the second word, and so on. Conduct a chi square test for each set of data. Number of consumers preferring Brand A 50 Brand B 60 Brand C 70 Remember, you can use Table B.5 on page 412 ofyour Salkind textbook 1. What is the value of each expected frequency? 2. What is the value of Chi Square? 3. What is the value of the degrees of freedom? 4. Is the chi square significant at the.01 level? Number of voters preferring Candidate A Candidate BCandidate C 400 Candidate D 250 190 5. What is the value of each expected frequency2 6. What is the value of chisquare? 7. What is the value of the degrees of freedom? 8. Is the null hypothesis rejected at the .05 level? SOLUTION SECTION: 3 (INTO 60 (BECAUSE 0.33 4 (DIVORCE) 302 (VOW)66 (LOVE) 3.33 (SO)180 (FAILURE)254.95 (GO) 226.50 (PEOPLE 906 THIRTY Yes 0.00 EDDINGS 0 EXPERIENCED ECTION Write the answers to the riddle here, writing one word on each line:

Explanation / Answer

applying chi square test:

1) expected frequency =60

2) vale of chi squre =3.33

3)df =categories-1=2

4)No

5) 226.5

6) 254.95

7) df =3

8) Yes

riddle: because so many inexperienced people go into it

observed Expected Chi square Brand Probability O E=total*p =(O-E)^2/E A 0.3333 50.000 60.00 1.67 B 0.3333 60.000 60.00 0.00 C 0.3333 70.000 60.00 1.67 1 180 180 3.33

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