My budget for the study has been increased so that i can take a sample of 7200 rather than the sample of 800 i was oringinally going to take! Consider the situation described in the image above. The result of this is that their confidence interval will now be: about 3 times wider pretty much unchanged about 1/9 as wide about 1/3 as wide about 9 times widertheir confidence interval will now be:

My budget for the study has been increased so that i can take a sample of 7200 rather than the sample of 800 i was oringinally going to take! what happen with the confidence interval

my budget for the study has been increased, so that i can take a sample of 3600 rather than the sample of 400 i was originally going to take!Consider the situation described in the image above. The result of this is that their confidence interval will now be: Group of answer choices about 9 times wider about 3 times wider pretty much unchanged about 1/3 as wide about 1/9 as wide

A 95% confidence interval was constructed for a population mean (sigma known). Suppose we are planning to repeat the study but we only have sufficient resources to take a sample that is one quarter the size of that used in the original study. Assuming we require the same level of confidence (and sigma has not changed), then the resulting margin of error (m.o.e.) for our new confidence interval will be:Group of answer choices √ 2 times the original margin of error 4 times the original margin of errortwice the original margin of error 1/4 times the original margin of error 1/√ 2 times the original margin of error

An analyst, using a random sample of n = 500 families, obtained a 90 per cent confidence interval for the mean monthly family income for a large population: ($3800, $4200). If the analyst had used a 99 per cent confidence level instead, the confidence interval would be:

What happens to confidence intervals when you increase the level of confidence (or equivalently decrease the level of significance)?Select all that applyGroup of answer choicesConfidence intervals get narrowerConfidence intervals get widerWe are more confident that the true population mean is inside the intervalsWe are less confident that the true population mean is inside the intervals