BUS 206 – Quantitative Analysis
SAS Assignment 6
Confidence Intervals.
This assignment is on confidence intervals for proportions (Ch. 9) and confidence intervals for means (Ch. 11). The following questions are based on the DATASETS.CLASSDATA
data set.
1.
The following table depicts the results for a student not selecting Stonehill as their first choice (
StonehillFirst
). State the 95% confidence interval properly using the format we discussed in class (Hint: page 284 of the text contains the correct wording). 2.
Determine the 99% confidence interval for a student not selecting Stonehill as their first choice (
StonehillFirst
). Use the CI_and_HypothTest_Proportions
program in the msale1>sasprogs folder, insert the screenshot of your SAS Studio results for the Confidence Limits for Binomial Proportion.
3.
Determine the 90% confidence interval for a student being right-handed (
Hand
). Insert the screenshot of your SAS Studio results and state the confidence interval properly.
4.
Determine the 99% confidence interval for a student traveling abroad (
TravelAbroad
). Insert the screenshot of your SAS Studio results and state the confidence interval properly.
5.
Determine the 95% confidence interval for the height of students (
Height
). Use the Summary Statistics task and insert the screenshot of your SAS Studio results.
6.
Determine the 99% confidence interval for the height of students (
Height
). State the confidence interval properly (Hint: page 351 of the text contains the correct wording).
7.
Explain why there is a difference in the 95% and 99% confidence interval results. In your
reasoning, be sure to clarify which CI has more precision and which CI has more certainty.
