Math topic中文

Population and simple random sample

Concepts of population and simple random sample.

Practice questions

  1. 1The organisers of a conference wish to conduct a survey on 80 participants to gather feedback about their conference exp…
  2. 2Section B: Statistics [60 marks] A company has 1500 employees. 35% of employees are in the 21-40 age group, 50% are in t…
  3. 3A company comprises 150 programmers, 15 secretaries and 15 section heads. The owner of the company wants to gather feedb…
  4. 4Section B: Statistics [60 marks] A company wants to find out the transportation habits of their employees. On one partic…
  5. 5In a social club with 1000 members, the executive committee would like to survey the members' opinion on the activities…
  6. 6Susan wants to set up a food stall in a particular food centre at Hougang and intends to interview 50 people on their fo…
  7. 7A store owner receives a shipment of stationery items, including notebooks, pens, and correction tapes. Historical data…
  8. 8Korean dramas, or Kdramas, have been immensely popular among students, captivating their attention during leisure hours.…
  9. 9Section B: Probability and Statistics [60 marks] The basketball club in a college has 5 centers, 8 forwards and 7 guards…
  10. 10The basketball club in a college has 5 centers, 8 forwards and 7 guards. With the National School Games approaching, the…
  11. 11In this question you should state the parameters of any distribution you use. A customer service call centre categor…
  12. 12An office received a total of 810 loan applications on a particular day. The applications were categorised into business…
  13. 13

    Section B: Statistics [60 marks] In the last election, there were speculations from unofficial sources before the co…

  14. 14A hand sanitiser company, Cleanser, claims that the mean volume of each bottle of their hand sanitiser is 15 ml. The con…
  15. 15A factory produces sausage rolls of length 10 cm. The production manager wishes to take a random sample of sausage rolls…
  16. 16A researcher is running a trial of a new variety of potato. A field contains 20 rows of the new variety of potato plants…
  17. 17

    Section B: Statistics [60 marks] The town council of a particular housing estate wishes to find out whether the resi…

  18. 18Flour is packed in bags of 1.5 kg, as stated on the packaging, by two separate machines A and B in a factory. During a q…
  19. 19Section B: Statistics As part of SG50 celebrations, a local grassroots organization invited the residents of the neighbo…
  20. 20The Ministry of Urban Development wishes to find out how the recent property cooling measures have affected Singaporeans…
  21. 21Tim is a student in a school with a large student population. As part of his project, Tim would like to interview some o…
  22. 22An office received a total of 810 loan applications on a particular day. The applications were categorised into business…
  23. 23In the swimming training school AquaV, the time taken to swim a lap of the pool by the trainees is found to have a mean…
  24. 24Mr Tan, who is the school Admin Manager, believes that JC students in his school take 22 minutes on average to buy and c…