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complete the table below and find the mean of the following probability distribution

1. X P(X) X-P(X)
1 1/7
6 1/7
11 3/7
16 1/7
21 1/7



x-P(X) =




2. X P(X) X-P(X)
3 0.15
6 0.35
8 0.4
10 0.1




X-P(X) =



Sagot :

Answer:

1. 1/7, 6/7, 33/7, 16/7, 3, mean =11

2. 0.45, 2.1, 3.2, 1 mean = 6.75

Step-by-step explanation:

1×1/7=1/7; 6×1/7 = 6/7; 11×3/7=33/7

16×1/7= 16/7 ; 21×1/7= 3

mean= 1/7+6/7+33/7+3=11