Project #68217 - statistics

  1. Shown in the following table are the reported annual deaths of males aged 75 or over from 1 of the 5 leading types of cancer:




For a randomly selected deceased male cancer victim, what is the probability that

  1. he died of 1 of the 2 primary causes?


  1. He died of cancer of either the stomach or the pancreas?


  1. He did not die of lung cancer?


  1. Out of every 100 cars that start in the Maryland Grand Prix race, only 60 finish.  Two cars are entered by the UMUC team in this year’s race.
  1. What is the probability that both will finish?


  1. What is the probability that neither of UMUC’s 2 cars will finish the grand prix?



  1. A review of the records at Lander Community College revealed the following ethnic breakdown of the student population:


Black  640

Hispanic  280

Asian    80

Native American    60

Other    20


  1. What is the probability that a randomly selected student is either

 Caucasian or Black?


  1. What is the probability that the selected student is not a member of either

 of the two largest categories?




  1. The area under the standard normal distribution between -1.5 and 1.5 is
    1. 0.1338
    2. 0.1668
    3. 0.4332
    4. None of the above


  1. The lengths of time bank customers must wait for a teller are normally distributed, with a mean of 3 minutes and a standard deviation of 1 minute.
    1. What proportion of bank customers waits between 3 and 4.5 minutes


    1. What percentage wait more than 4 minutes?


    1. What proportion waits between 2 and 3.5 minutes?


    1. What percentage wait less than 1 minute?



  1. To estimate the medical charges for an appendectomy Blue Star Insurance has data from a random sample of 70 patients.  The sample mean cost is $510, with a sample standard deviation of $70.
    1. Construct a 95% confidence interval for the population mean cost.



We are 95% confident that the populations mean costs of patients’ medical charges for an appendectomy through Blue Star Insurance range is between ??? and  ???

Subject Mathematics
Due By (Pacific Time) 04/26/2015 12:00 pm
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