تجمع بنات (مستجد اعمال) لمذاكرة احصاء اعمال 271 &الدوري الاول&

[Nada YK]

Suppose the management
of the Santoni Pizza
Restaurant found that 70percent of its new
customers return for
another meal. For a week
in which 80 new (firsttime)
customers dined at
Santoni’s, what is the
probability that 60 or
more will return for
another meal?

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