The quantities of sugar found in each of two brands of soda. Their population va

Question

The quantities of sugar found in each of two brands of soda. Their population variances are
unknown.

Coke: 50mg 48mg 47mg 50mg 49mg
Pepsi: 42mg 44mg 51mg 53mg 49mg

Which is the most appropriate test procedure?
(A) single sample t-test with 4 degrees of freedom
(B) single sample t-test with 9 degrees of freedom
(C) two sample t-test with 4 degrees of freedom
(D) two sample t-test with 8 degrees of freedom
(E) Paired samples t-test with 4 degrees of freedom
(F) Paired samples t-test with 8 degrees of freedom
(G) Chi-square test with 4 degrees of freedom
(H) Chi-square test with 8 degrees of freedom

Explanation / Answer

From given data set we can say that, Answer is D)

Df=5+5-2=8. The population variances are same

Two sided t test with 8 degree of freedom .

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