Mathematics, 06.12.2019 06:31 quarrella
Two independent samples of sizes 20 and 30 are randomly selected from two normally distributed populations. assume that the population variances are unknown but equal. in order to test the difference between the population means, , the sampling distribution of the sample mean difference, , is
a. normal. b. student-t with 48 degrees of freedom. c. student-t with 50 degrees of freedom. d. none of these choices.
Answers: 1
Mathematics, 21.06.2019 17:20
Given: hf || jk; hg ? jg prove: fhg ? kjg to prove that the triangles are congruent by asa, which statement and reason could be used as part of the proof? fgh ? kgj because vertical angles are congruent. jkg ? hfg because vertical angles are congruent. fhg ? jkg because right angles are congruent. hfg ? kjg because alternate interior angles are congruent.
Answers: 1
Mathematics, 21.06.2019 19:30
Tim's phone service charges $26.39 plus an additional $0.21 for each text message sent per month. if tim's phone bill was $31.64, which equation could be used to find how many text messages, x, tim sent last month?
Answers: 1
Two independent samples of sizes 20 and 30 are randomly selected from two normally distributed popul...
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