هنآ: اسئلتكم في مآدةة الاحصآء

[فطوم A]

وكمااان دا السؤال =) وشكرا مقدما =)
25. The average weight of books on a library f is 8.3 grams. The standard deviation
is 0.6 grams. If 20% of the books are oversized , find the minimum
weight of the large books on the library f. Assume the variable is normally
distributed.
A) 8.612 grams
B) 0.3 gram
C) 0.84 gram
D) 8.804 grams