Cho X biến ngẫu nhiên và là độ lệch tiêu chuẩn của X, C là hằng số. Ta có

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Một số câu hỏi khác có thể bạn quan tâm.

• Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions:

  We have had our car ________ so we need a lift.         

• Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions:

  We ________ Narita since last Sunday.              

• Hỏi hàm số  đồng biến trên khoảng nào?  

• Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions:

  New factories __________ in the depressed area.         

• Cho hàm số . Mệnh đề nào dưới đây đúng?  

• Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions:

  He wanted to know ______ shopping during the previous morning         

• Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions:

  Do you know the person _________ next to you in the evening class ?         

• Cho hàm số . Mệnh đề nào dưới đây đúng?  

• Hàm số nào dưới đây đồng biến trên khoảng ?  

•  

  Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions:

  Emily said that her teacher _________to London _________.