1. Is blood pressure the same for both arms? Listed below are BP measurements (mm Hg) taken from the right and left arms of the same woman. Use a level of significance 5% to test for a difference between the measurements from the two arms (Hint: Paired T-TEST design).
1 2 3 4 5
Right Arm 102 101 94 79 79
Left Arm 175 169 182 146 144
2- Each of three cars is driven with each of four different brands of gasoline. The number of miles per gallon driven for each of the ab = (3)(4) = 12 different combinations is recorded below.
Gasoline
Car 1 2 3 4
1 26 28 31 31
2 24 25 28 27
3 25 25 28 26
a- Test the hypothesis that we can expect the same mileage for each of these four brands of gasoline at α = 0.01.
b- Test the hypothesis that we can expect the same mileage for each of these three models of car at α = 0.01.
c- Is there any evidence of interaction between gasoline brands and type of cards in determining mileage driven at α = 0.01?
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