Bài Tập Lớn Xác Suất Thống Kê Thầy Thi

1 1952917 Đinh Duy Phú2 1952346 Kiềều H i Namả3 1952467 Ph m Minh Thi nạ ệ4 1952300 Bùi Tr ng Anh Khôiọ5 1953037 D ng Minh Tríươ6 1852303 vàng anh Dũng

CONTENT (Topic 9)

1. Problem 1

a. Solution

b. Using R studio

2. Problem 2

a. Solution

b. Using R studio

3. Problem 3

a. Solution

b. Using R studio

4. Problem 4

a. Solution

b. Using R studio

 1 2 ( ) a ⇨ reject Ho (df=k-1)Function Chitest in Excel can calculate  2 according to:221 1

h k ( ij ij )

i j ij

O E E

  



Oi j : the observed frequencies for the ith row and jth columnEi j : the expected frequencies for the ith row and jth column;h: number of row;k: number of column.

If

2 2 0,02 ( 1)( 1) h k   , reject

If

2 2 0,02 ( 1)( 1) h k   , accept

If P(X > 2) >

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