If other factor neld constant, which of oa urina sets of data would produce the

Question

If other factor neld constant, which of oa urina sets of data would produce the vargest value for an independern measureststatistica e ne two samples both have n 15 with variances of 12 125. o b The two samples both have n 30 with variances of 120 and 125 c. The two samples both have n 15 with sample variances of 20 and 25. d. The two samples both have n -30 with sample variances of 20 and 25. QUESTION 15 Which of the following sets of sample data would produce the largest value for an independent-measures t statisti. Assume that n 10 for am samples Nove You should not need to do any serious calculati ons to answer this question. a. First sample: M. 30 and ss 10 second sample: M-50 and ss 10 b. First sample: M 30 and Ss 10. Second sample: M 35 and SS 10 c. First sample: M 30 and SS 50. Second Sample MH 35and SS 50 d First sample: M-30 and ss 50 second sample M 50 and ss 50 QUESTION 16 compare two treatments. If the results are evaluated with at statistic using An independent measures research study uses two samples, each with n-12,to two-tailed test with a .05, then what are the boundaries for the critical region? O a ta 12.201 12.228 O b-t c. t 12.069 d.ta 12.074 1 points save Answer QUESTION 17 two experimental treatments. Thet statistic An independent-measures experiment uses one sample with n 6 and a second sample with n 10 to compare from this experiment have degrees of freedom equal to a. 8 b.7 c, 15 d. 14.

Explanation / Answer

14) as t stat is inversely proportional to std error which is

as it is minimum for option D therefore option D will provide maximum test stat t.

15)as tstat =(X-Xo)/std error

and it is maximum for option A

16)here degree of freedom =n1+n2-2 =12+12-2 =22

hence for 22 degree of freedom and 0.05 level ; value of t =+/- 2.704

therefore option d is correct

17) degree of freedom =6+10-2 =14

option d

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