TMTH3360 Ch 8 HW.xlsx - Hungry Rats mean 19.3 std dev 5.2 n...

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Hungry Rats mean 19.3 std dev 5.2 n 30 st 0.94939 B5/SQRT(B7) me 1.8608 1.96*E9 ci 17.4392 21.1608 B3-B11 B3+B11
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Acid Rain mean 3.7 std dev 0.5 n 40 se 0.07905694 C4/SQRT(C5) me 0.20396691 1.96*I7 ci 3.49603309 3.90397 random sample
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Hamburger Meat mean 1.01 st dev 0.18 n 35 a. se 0.030426 B4/SQRT(B5) me 0.078498 99% 2.58*B9 ci 0.931502 1.0885 b. we are 99% confident that the true value is in the interval. Only 1% of the time outside it c. no - 1 is in the interval
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e would we get a value
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Independent random samples 1 2 n 35 49 mean 12.7 7.4 var 1.38 4.14 a. se 0.35202 SQRT((B5/B3)+(C5/C3)) me 0.68996 1.96*H8 5.3diff in means 5.3 B4-C4 ci 95% conf int 4.61004 5.98996 b. H12-H10 Yes there is a differnce, 0 is not in the interval
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H12+H10
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Selenium region 1 region 2 n 30 30 avg 167.1 140.9 std dev 24.3 17.6 var 590.49 309.76 diff means 26.2 std error 5.478 margin error 10.737 95% confidence interval 15.463 36.937 We can be 95% confident that region 1 takes in somewhere between 15.46 to 36. Region 1 takes in more selenium. 1 2 n 30 30 mean 167.1 140.9
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