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A condition of the Central Limit Theorem is:

a. np  10 and n(1 – p)  10,

b if p is not known the n use pˆ : npˆ 10 and n(1− pˆ) 10

c. n  10 and n(1 – )  10

d. if  is not known then u se  pˆ : n pˆ 10 and n(1−pˆ)