Question 18 Not yet answered Points out of 2.25 Information regarding gas prices

Question

Question 18 Not yet answered Points out of 2.25 Information regarding gas prices taken from a sample of gas stations in four states is given below Virginia Maryland Florida Georgia Sample Size (n) Sample Mean (x bar) Sample Variance 6 4 5 4 Flag question 2.30 2.45 2.75 2.60 0.25 0.09 0.49 0.36 If you want to test if there is a significant difference between the mean gas prices in the four different states using ANOVA. Using 95% confidence, what is the critical value for this test? Use TWO decimal places in your answer Answer:

Explanation / Answer

from above degree of freedom of numerator =number of groups-1=k-1=4-1=3

for degree of freedom of denominator =n-k =(6+4+5+4)-4=15

hence critical value for (3,15) degree of freedom and 95% level =3.29

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