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Unformatted text preview: x 9 4 8 3 2 5 1 6.  You want a 95% confidence interval with a maximum error=.02 for the proportion of students who will vote for Kean. How many students do you need in your sample? 7.  What are the following probabilities for the standard normal variable, Z: prob( Z=1) prob( -.33 < Z < 2.09) prob ( z< 1.48) 8  What is the probability that Rutgers wins more than 8 games of the 11 games on their schedule? The probability Rutgers wins any game is .8. 9.  Calculate the 99% confidence interval for the population mean. A sample of 81 had a sample mean=22 and standard deviation=6. 10.  The RU-N basketball team will play 30 games. What is the probability they win 20 or more games if the probability they win any game equals .7? 11.  A class of 40 students has 22 men and 18 women. What is the probability that 3 of 5 chosen are men?...
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This note was uploaded on 11/06/2010 for the course STATS 220:231 taught by Professor Vanderhoff during the Spring '10 term at Rutgers.
- Spring '10