Razorback Posted February 17, 2005 Report Share Posted February 17, 2005 Some questions -- this stuff is kinda mind boggling. In a given school, 27% of the students use HP calculators. 73 of the school's students are selected at random and surveyed as to the maker of their calculator. Let x be the number of students who have an HP calculator. 1. What is the probability that exactly 20 of these randomly sampled students have an HP Calculator? A. .0955 B. .1013 C. .1022 D. .1039 2. What is the probability that fewer than 17 of these randomly sampled students have an HP Calculator? A. .2004 B. .2334 C. .2609 D. .2848 3. What is the probability that more than 30 of these randomly sampled students have an HP Calculator? A. .0014442 B. .0030995 C. .0032308 D. .0063303 If anyone could shed some light it would be much appreciated. Thanks. Quote Link to comment Share on other sites More sharing options...
Guest doggunracing Posted February 17, 2005 Report Share Posted February 17, 2005 http://www.wideopenwest.com/~kbounds/stats.gif Where N is the # of trials, n is the # of successes, and p is the success rate. Quote Link to comment Share on other sites More sharing options...
black00ws6 Posted February 17, 2005 Report Share Posted February 17, 2005 stats rule Quote Link to comment Share on other sites More sharing options...
Guest doggunracing Posted February 17, 2005 Report Share Posted February 17, 2005 Originally posted by Homey D. Clown: stats rule-1 By the way, anyone else getting PELTED with snow? It's almost white-out here! Quote Link to comment Share on other sites More sharing options...
The Man of Steele Posted February 17, 2005 Report Share Posted February 17, 2005 ib. 81% of all stats are made up Quote Link to comment Share on other sites More sharing options...
Dr. Pomade Posted February 17, 2005 Report Share Posted February 17, 2005 Originally posted by Wonka: ib. 81% of all stats are made upBut only 6 % of all people know that. Quote Link to comment Share on other sites More sharing options...
Guest rperry74 Posted February 17, 2005 Report Share Posted February 17, 2005 And only 1% of people know that only 6% of people know that! HA Quote Link to comment Share on other sites More sharing options...
Science Abuse Posted February 17, 2005 Report Share Posted February 17, 2005 my cats breath smells like catfood Quote Link to comment Share on other sites More sharing options...
Guest timmybgood Posted February 17, 2005 Report Share Posted February 17, 2005 Originally posted by doggunracing: -1 By the way, anyone else getting PELTED with snow? It's almost white-out here!yea, i only had to walk from the library to larkins which is what, 100 yards? i turned into a snowman long before i reached larkins Quote Link to comment Share on other sites More sharing options...
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