ditieu x value)2 (Questions 79) A survey of property owners\' opinions about a s

Question

ditieu x value)2 (Questions 79) A survey of property owners' opinions about a strect-widening pronoml slectd ample of owners' opinions were related to the distance between their home and the stree property owners was contacted and the results are shown next. was taken to determine i Front Footage ior Indecided Against Opinion Under 45 foet _12 45-1 20 fect 35 30 Over 120 feet 3 7. What is the fre frontage? Show your solution A) 1.1 B) 3.9 C), 5.0 D) 5.5 E) Cannot decide e expected frequency for neonle against the proiect and who havc over 120 feet of property foot- R/ 8. What is the critical value at the 10% level of significance? A) 7.779 B) 9.236 C) 9.448 D) 11.070 E) 1.064 9. How many degrees of frcedom are there? A) 3 B) 4 C) 5 D) 6 E) 9

Explanation / Answer

Answers

7. B) 3.9

Hint: Expected frequency = (39 * 10)/100 = 3.9

8. A) 7.779

Hint:

Degrees of freedom = (No. of rows - 1) * (No. of columns - 1)

= (3 - 1) * (3 - 1)

= 4

Critical value is obtained from the chi-square distribution table with df = 4 at the significance level 0.10

Critical value = 7.779

9. B) 4

Hint:

Degrees of freedom = (No. of rows - 1) * (No. of columns - 1)

= (3 - 1) * (3 - 1)

= 4

12 4 4 20 35 5 30 70 3 2 5 10 50 11 39 100

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