Question

1. )A research firm is performing analysis using miles-per-gallon as main characteristic of three different brands of gasoline, I, II, and III. A sample of 5 cars using these brands was collected and data is shown in the table below.

                                                       Miles per Gallon

Brand of gasoline	I	II	III
	25	22	30
	24	26	27
	30	24	34
	25	25	24
	26	23	25
Sample mean	26	24	28
Sample variance	5.5	2.5	16.5

1. (5pt) Perform an ANOVA test to find if there are differences among the three brands with regards to miles-per-gallon. Allow 10% of error in your test.

Answer:

2. (2pt) Do you think that miles-per-gallon are different among the 3 different gasoline brands?

Answer:

Question answered not in Excel if possible Please

Answer 1