Rev for Final2122

Rev for Final2122 - Review for the Final Exam I. Below are...

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

View Full Document Right Arrow Icon
Review for the Final Exam I. Below are the times between eruptions of the Old Faithful Geyser, find the mean, median, mode, range, variance and standard deviation for the data: 98, 92, 95, 87, 96, 90, 65, 92, 95, 93, 98, 94 II. A city assessor wished to estimate the mean income per household. The previous mean income was $25,300. A random sample of 12 households in the city showed a mean income of $29,400 and a standard deviation of $6325. (a) Find a 95% confidence interval for μ , the population mean income per household in the city. (b) Based on your answer in part (a), would the assessor conclude that the mean income had increased over the previous estimate of $25,300? III. . A study was recently done that emphasized the problem we all face with drinking and driving. Four hundred accidents that occurred on a Saturday night were analyzed. Two items noted were the number of vehicles involved and whether alcohol played a role in the accident. The numbers are shown below: Number of Vehicles Involved a) What proportion of the accidents involved a single car without the effect of alcohol? b) What proportion involved No alcohol or a single car? c) Assuming No alcohol involvement, what proportion of the accidents involved a single car? d) What proportion of the accidents involved more than a single vehicle?
Background image of page 1

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

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 12/11/2011 for the course STA 2122 taught by Professor Staff during the Fall '08 term at FIU.

Page1 / 3

Rev for Final2122 - Review for the Final Exam I. Below are...

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

View Full Document Right Arrow Icon
Ask a homework question - tutors are online