{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

painless_confidence-intervals_for_population_proportions_20110410sun

# Painless_confidence-intervals_for_population_proportions_20110410sun

This preview shows pages 1–2. Sign up to view the full content.

painless confidence intervals for population proportions.docx / 4.10.2011 / page 1 of 3. PAINLESS CONFIDENCE INTERVALS for POPULATION PROPORTIONS d. jones // 20110410sun In class, we talked about the almost-longhand method (that is using your graphing calculator somewhat) of determining a 95% CI (Confidence Interval) for a population proportion, p . In this paper, we shall review that procedure with an example, then we ll show you a short-cut method , which I believe you will just love. So here is our (fictitious) example: According to the JSS ( J ones S ocial S urvey), when 877 randomly selected TCC Sophomores were asked, Do you really love math, or do you just say that to suck-up to your professor? 47 indicated that they really love math, and the remainder indicated that they were just sucking- up to their professor. (a) Find the 95% CI for the proportion of all TCC Sophomores who really love math, and (b) interpret this result, and can you legitimately conclude that less than 10% of TCC Sophomores really love math?

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### Page1 / 3

Painless_confidence-intervals_for_population_proportions_20110410sun

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online