MATH 211 statisies oL Homework: Homework #7 Score: 0 ot 7 pts 9.3.21-T HW Score:

Question

MATH 211 statisies oL Homework: Homework #7 Score: 0 ot 7 pts 9.3.21-T HW Score: 30 90%, 21 37of 69pts ssume hat he two samples are independent simple random samples selected from nomaly dastributed populations De not ssume that the population standard deviations a does that dference have practic all significanee? Cick the kcon to view the data for home vollages and generator voltages Data for Home Vollages and Geneor Votages 21234 6123 2 1232 242 9 1234 1123 0 1236 12 1234 Cick to sect your answer and then cack Check Answer

Explanation / Answer

Here we have to find that mean population home voltage lets say 1 and mean population generator voltage 2 are different statistically.

so Null HYpothesis : H0 : 1 = 2

Alternative Hypothesis : Ha : 1 2

Option C is correct here.

Here is the paired data table is

Average value of Difference dbar = 1

Standard deviation sd = 0.4674

Test statistic

t = d/ (sd /sqrt(n) = 1/ (0.4674/ sqrt(40) = 13.53

Day Home Generator d 1 123.5 124.4 0.9 2 123.4 124.6 1.2 3 123.3 124.5 1.2 4 123.9 124.8 0.9 5 123.6 125 1.4 6 123.8 124.6 0.8 7 123.2 124.8 1.6 8 123.7 123.9 0.2 9 123.4 124.9 1.5 10 123 124.1 1.1 11 123.7 124.5 0.8 12 123.5 125.3 1.8 13 123.1 125 1.9 14 123.8 124.9 1.1 15 123.8 124.7 0.9 16 123.8 124.7 0.9 17 123.8 123.5 -0.3 18 123.9 124.5 0.6 19 124 124.5 0.5 20 123.9 124.4 0.5 21 123.2 124.2 1 22 123.1 125 1.9 23 123.6 124.9 1.3 24 123.4 124.6 1.2 25 123.9 124 0.1 26 123.2 124.4 1.2 27 123 124.2 1.2 28 123.5 124.7 1.2 29 123.2 124.2 1 30 123.9 124.1 0.2 31 123.6 124.5 0.9 32 123.5 124.4 0.9 33 123.4 124.4 1 34 123.6 124.6 1 35 123.5 124.5 1 36 123.5 124.6 1.1 37 123.4 124 0.6 38 123.1 124.7 1.6 39 123.2 124.6 1.4 40 123.7 124.4 0.7 1 0.46744

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