SOLUTION: Four different brands of cola are tested in a taste test(everybody is supposed to be blindfolded). The following table shows how many people were able to identify 4 popular brands

Question 188609: Four different brands of cola are tested in a taste test(everybody is supposed to be blindfolded). The following table shows how many people were able to identify 4 popular brands of cola. At a .05 level of significance, test the claim that the results are equally distributed.
Brand Observed
Coca Cola 66
Pepsi Cola 86
Diet Cola 18
Diet Pepsi 30
Find the critical value. Choose between
A. 14.860
9. 488
C. 7.815
D. 12.838
And Find the test Statistic
A. 0.88
B. 8.49
C. 11.20
D. 59.52

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Four different brands of cola are tested in a taste test(everybody is supposed to be blindfolded). The following table shows how many people were able to identify 4 popular brands of cola. At a .05 level of significance, test the claim that the results are equally distributed.
Brand Observed
Coca Cola 66
Pepsi Cola 86
Diet Cola 18
Diet Pepsi 30
-------------------------
Use the Chi Sq Table with df = 3 and right tail = 5%
Find the critical value.
Ans: C. 7.815
---------------------------
Calculate the Chi-Sq with "observed" being the listed values
and "expected" being 50,50,50,50
Then the test Statistic is
Ans: D. 59.52
-------------------------------------
Cheers,
Stan H.
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