Reports -often asked exam questions

what is the MOE needed for

the MOE is needed to take into account the natural variation that always occurs form sample to sample

explanatory, response variables

the explanatory variable explains a change in the response variable

no comparison claim

We can say, with 95% confidence, that the percentage of (claim) is somewhere between ____% and ____%.

The percentage of__ could be as low as ______%, and so this confidence interval ________ support a claim of over 50% as implied by the “___” statement.

comparison within one group

It is a fairly safe bet that the percentage of ___ is somewhere between ___ percentage points lower and ___ percentage points higher than the percentage of ___

This confidence interval does not support the claim that a higher percentage of ___ than ___ because zero is contained within the confidence interval.

comparison between two independent groups claim

It is a fairly safe bet that the percentage of ____ is somewhere between ___ percentage points higher and ___ percentage points higher than the percentage of ___

This confidence interval does support the claim that a higher percentage of ___ because the confidence interval is entirely positive.