Two-Sample T Tests for Debt by Tattoo Tattoo N Mean SD SE No 52 12.346 16.514 2.
ID: 3289596 • Letter: T
Question
Two-Sample T Tests for Debt by Tattoo Tattoo N Mean SD SE No 52 12.346 16.514 2.2900 Yes 16 5.5625 7.3663 1.8416 Difference 6.7837 14.935 4.2697 T-Tests for Mean Difference Null Hypothesis: difference = 0 Alternative Hyp: difference 0 Lower Upper Method Variances DF T P 99% C.I. 99% C.I. Pooled Equal 66 1.59 0.1169 -4.5413 18.109 Satterthwaite Unequal 57.1 2.31 0.0246 -1.0470 14.614 Homogeneity of Variances DF F P Folded F Test 51,15 5.03 0.0007 Suppose it is desired to create a confidence interval that is narrower in width than the one shown in the printout. Which of the following will guarantee that the interval will get narrower? Increase the confidence level. Increase the sample size. Decrease the alpha used. All of these will reduce the interval width.
Explanation / Answer
here as we know to reduce the confidnce interval ; wecan reduce margin of error by increasing sample size,
therefore correct answer is Increase the sample size
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.