'As confidence increases confidence interval would_. get narrower get wider shift lower (both bounds) shift higher (both bounds) conducted a trial study and found had my power was 71%. What could do to increase the statistical power of test for the full study? switch to a non-parametric test for normally distributed data decrease my alpha value change the experimental design to permit an independent sample test; rather than a paired test increase the sample size for a future trial'
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'As confidence increases confidence interval would_. get narrower get wider shift lower (both bounds) shift higher (both bounds)' Answer: As confidence increases, the confidence interval would get narrower. Show more…
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5. Decreasing the sample size, while holding the confidence level the same, will do what to the length of your confidence interval? a) make it bigger b) make it smaller c) it will stay the same d) cannot be determined from the given information 6. Decreasing the confidence level, while holding the sample size the same, will do what to the length of your confidence interval? a) make it bigger b) make it smaller c) it will stay the same d) cannot be determined from the given information 7. If you increase the sample size and confidence level at the same time, what will happen to the length of your confidence interval? a) make it bigger b) make it smaller c) it will stay the same d) cannot be determined from the given information 8. What should be the value of Z used in a 93% confidence interval? a) 2.70 b) 1.40 c) 1.81 d) 1.89
Sri K.
9. The researchers are not satisfied with their confidence interval and want to do another study to find a shorter confidence interval. What should they change to ensure they find a shorter confidence interval? a) They should increase their confidence level and increase their sample size. b) They should increase their confidence level but decrease their sample size. c) They should decrease their confidence level but increase their sample size. d) They should decrease their confidence level and decrease their sample size. Answer __________ 10. Suppose the p-value is .044. What will the conclusion be at alpha levels of .10, .05, and .01? a) We will reject Hâ‚€ at alpha=.10, but not at alpha=.05 b) We will reject Hâ‚€ at alpha=.10 or .05, but not at alpha=.01 c) We will reject Hâ‚€ at alpha=.10, .05; or .01 d) We will not reject Hâ‚€ at alpha=.10, .05, or .01
Qudsiya A.
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