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Statistics Questions

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Question;1.Sample;25 51 81 17 68;Find the sample mean and the standard;deviation.;2.Bob's;height is 7.4 in. In his sports team the mean height is 71in, and the standard;deviation is 3in. Bill's height is 76in. In his sports team the mean height is;73in, and the standard deviation is 2.8in. Fill's height is 75in. In his sports;team the mean height is 69in, and the standard deviation is 2.6in. Is any of;them unusually tall in his sports team? explain.;3.A;bag contains ten red marbles, 5 yellow, and 7 green marbles. If one of;the marbles is randomly picked from the bag, what is the probability the marble;is not green?;4.350;randomly selected residents of California were asked if they spent the last;weekend at home or went on a trip. 78 answered they made a trip within;California, 64 traveled outside California, and the rest stayed at home. If one;of the people is selected at random, what is the probability that he spent the;weekend without leaving California?;5.During;one week Jackson dealership sold the following vehicles.;Sedans 8 Toyota, 5 Ford, 3 GMC.;SUV 9 Toyota, 5 Ford, 10 GMC.;-If;one vehicle is selected at random, find the probability that it is a GMC SUV.;-If;one vehicle is selected at random, find the probability that it is a Ford or;Sedan.;-If;one vehicle is selected at random, find the probability that it is a Toyota or;GMC.;6.On;a multiple choice test, each question has 5 answers, only one of which is;correct. A student makes random guessing on questions 1, 2, and 3. What is the;probability that all three answers are correct?;-Two;cards are drawn at random without replacing from a deck of 52 cards. What is;the probability that both cards are aces?

 

Paper#60396 | Written in 18-Jul-2015

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