Mathematics, 11.12.2019 21:31 MiddleSchool2005
Arandom sample of 49 measurements from a population with population standard deviation σ1 = 4 had a sample mean of x1 = 9. an independent random sample of 64 measurements from a second population with population standard deviation σ2 = 5 had a sample mean of x2 = 12. test the claim that the population means are different. use level of significance 0.01. find a 99% confidence interval for μ1 − μ2.
Answers: 2
Mathematics, 21.06.2019 14:00
In factoring by grouping, what would you have for step 3 for the following? step 1: x^3 +5x^2 +4x+20 step 2: x^2 (x+5)+4(x+5) step 3: ?
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Arandom sample of 49 measurements from a population with population standard deviation σ1 = 4 had a...
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