21 Questions
| Total Attempts: 201

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)

×

Wait!

Here's an interesting quiz for you.