HSCI 390 - Bio Statistics » Spring 2020 » Lecture Homework 8

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Question #1
What decision you would make regarding the null hypothesis (reject or fail to reject (i.e., retain)) given the following scenario in a two independent samples t-test? critical t-values = 1.458 and -1.458; calculated test statistic = 2.597
A.   Fail to reject (i.e., retain) the null hypothesis
B.   Reject the null hypothesis
Question #2
What decision you would make regarding the null hypothesis (reject or fail to reject (i.e., retain)) given the following scenario in a two independent samples t-test? critical t-values = 2.346 and -2.346; calculated test statistic = -1.582
A.   Fail to reject (i.e., retain) the null hypothesis
B.   Reject the null hypothesis
Question #3
What decision you would make regarding the null hypothesis (reject or fail to reject (i.e., retain)) given the following scenario in a two independent samples t-test? α = 0.05; p value = 0.124
A.   Reject the null hypothesis
B.   Fail to reject (i.e., retain) the null hypothesis
Question #4
What decision you would make regarding the null hypothesis (reject or fail to reject (i.e., retain)) given the following scenario in a two independent samples t-test? α = 0.05; p value = 0.003
A.   Reject the null hypothesis
B.   Fail to reject (i.e., retain) the null hypothesis
Question #5
Find the critical t-value(s) for a two independent samples t-test given: α = 0.01; df = 22; two-tailed test
A.   -2.122
B.   1.948 and -1.948
C.   3.849
D.   2.743 and -2.743
E.   2.819 and -2.819
Question #6
Find the critical t-value(s) for a two independent samples t-test given: α = 0.05; n1 = 14; n2 = 16; two-tailed test
A.   1.761 and -1.761
B.   -4.925
C.   2.048 and -2.048
D.   1.28
E.   2.080 and -2.080
Question #7
Find the critical t-value(s) for a two independent samples t-test given: α = 0.01; df = 14; two-tailed test
A.   -2.576
B.   2.977 and -2.977
C.   2.819 and -2.819
D.   2.846 and -2.846
E.   1.335
Question #8
Find the critical t-value(s) for a two independent samples t-test given: α = 0.05; n1 = 34; n2 = 30; two-tailed test
A.   1.222
B.   1.758 and -1.758
C.   2.546 and -2.546
D.   2.000 and -2.000
E.   -2.745

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