رد: هنآ: اسئلتكم في مآدةة الاحصآء
سؤال 1 ..
The average height of apple trees in a garden is 10,5 feets , if the heights are normally distributed with a standard deviation of 3 , find the percentage that a tree is less than 12,5 feets tall
???
الحل : 74,86%
سؤال 2 ..
The average of 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 (ذات حجم كبير ) , find the minimum weight of the large books on the library f , assume the variable is normally distributed
الحل : 8,804 grams
بليز ابغى اعرف كيف انحلت هالسؤالين ..
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