Tìm kích thước mẫu tối thiểu trong ước lượng khoảng tin cậy cho trung bình để đảm bảo độ chính xác nhỏ hơn hoặc bằng 0,7 và độ tin cậy 95%, biết rằng

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Một số câu hỏi khác có thể bạn quan tâm.

• Choose a word that has different stress pattern:

  tearaway                physical                  computer               paragraph

• Choose the best answer for the following sentence:

  Paula is understood _______________ the first prize.

• Choose the best answer for the following sentence:

  I don't mind ___________ waiting for a few minutes.
  
  

• Choose the best answer for the following sentence:

  The paintings ______________ till the end of the month.
  
  

• Choose the best answer for the following sentence:

  Blocks of flats _____________ all over the town by the authorities.
  
  

• Choose the best answer for the following sentence:

  All the power cables ___________ down by a storm last night.
  
  

• Choose the best answer for the following sentence:

  I think you should have your house _______________ for the new year.
  
  

• Choose the best answer for the following sentence:

  The __________ year in our country runs from September to June.
  
  

• Choose the best answer for the following sentence:

  Each term is separated by a one-week break __________ half term.
  
  

• Choose the best answer for the following sentence:

  There are two ____________ school systems in England: state and public.