Math Quiz Statistics And Probability

21 Questions | Total Attempts: 128

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Math Quiz Statistics And Probability

Questions and Answers
  • 1. 
    People on the street were asked "How many siblings do you have?". The following diagram shows the result: How many people answered the question?
  • 2. 
    People on the street were asked "How many siblings do you have?". The following diagram shows the result: What's the mode?
  • 3. 
    People on the street were asked "How many siblings do you have?". The following diagram shows the result: What's the mean?
  • 4. 
    People on the street were asked "How many siblings do you have?". The following diagram shows the result: What's the median?
  • 5. 
    A culture assiciation wanted to find out what the citizens of the town thought about the idea of building a new house of culture. A survey was made and 200 people who were entering the theater were asked. Which of the following alternatives is the highest contributor to a source of error being made in this survey?
    • A. 

      200 people is not enough - more people should be asked!

    • B. 

      There should be a random sample! People attending the theater are more interested in culture than an average citizen!

  • 6. 
    A bag of marbles contains 5 black and 3 white marbles. You pick two marbles without looking (and no replacement). Determine the probability that the first marble is black. (Express your answer as a fraction)
  • 7. 
    A bag with marbles contains 5 black and 3 white marbles. You pick two marbles without looking (and no replacement). Determine the probability that both marbles are black. (Write as a fraction)
  • 8. 
    You have received a phone number on a note, but the last digit in the number is missing!  073-309601.... Determine the probability that by choosing a random number for the last digit, you will get the correct phone number.
  • 9. 
    All students in a town were tested for colour blindness: Normal vision:           Boys 9800        Girls 9360 Colour blind:              Boys 720          Girls 120 a) Determine the probability that a boy is colour blind. (Express your answer in percentage form with one decimal)
  • 10. 
    All students in a town were tested for colour blindness: Normal vision:           Boys 9800        Girls 9360 Colour blind:              Boys 720          Girls 120 a) Determine the probability that a girl is colour blind. (Express your answer in percentage form)
  • 11. 
    Use the grid to determine the probability of getting the sum 7 when two dice are rolled. (Express your answer as a fraction)
  • 12. 
    Use the grid to determine which event has the highest probability: getting the sum 5 or getting the sum 10 when two dice are rolled?
    • A. 

      Getting the sum 5 is more likely

    • B. 

      Getting the sum 10 is more likely

  • 13. 
    M=Male F=Female Use the tree diagram to determine the probability that a family with three children consists of three boys. (Express your answer as a fraction)
  • 14. 
    M=Male F=Female Use the tree diagram to determine the probability that the children in a family with three children have different gender. (Express your answer as a fraction)
  • 15. 
    There are 4 grey socks, 4 black socks and 4 white socks in a drawer. You pick two socks without looking (and without replacement). What are chances that both socks have the same colour? (Draw a tree diagram and then express your answer as a fraction.)
  • 16. 
    You plant three seeds. The chance for a seed to grow is 80%. Determine the probability that no seed grows. (Express your answer in percentage form)
  • 17. 
    You plant three seeds. The chance for a seed to grow is 80%. Determine the probability that at least one seed grows. (Express your answer in percentage form)
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