Answer :
For 8% p-value cutoff , Melissa should use 92% confidence interval
A confidence interval calculated for a treatment effect measure shows the range in which the true treatment effect is likely to fall.
A smaller sample size or higher variability will result in a wider confidence interval with a larger margin of error. The interval width is also influenced by the level of confidence. If you want a higher level of certainty, the interval should be wider.
The width of the confidence interval and the size of the p value are related.
The narrower the interval, the smaller the p value. The confidence interval, on the other hand, provides useful information about the likely magnitude of the effect under consideration as well as the accuracy of the estimate.
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