Answer:
Thời gian vận chuyển hàng hóa trên tuyến đường AB là biến ngẫu nhiên X có phân phối
chuẩn với trung bình 5 giờ, độ lệch chuẩn 0, 25 giờ.
a. Chuyến có thời gian lớn hơn 5,2 ( ) /100 a b giờ được xem là trễ, tính tỉ lệ chuyến trễ?
Step-by-step explanation:
Answer:
4 x 40 = 160, 160 x11= 1760+2= 1762
Step-by-step explanation:
The completed table will have values filled into it accordingly from left to right and the downwards.
<h3>What values are required to complete the table?</h3>
The concept of relative frequencies involves expressing the frequency of occurrence of events as a fraction of a whole frequency.
Hence, it follows that the blank space on the top-leftmost corner of the table can be filled with the value; 4/5 = 0.8.
For the top-rightmost blank space in the table, the required value is; 2/754 = 0.0027.
For the bottom-leftmost blank space, the required value to fill the table is; 1/5 = 0.2.
For the bottom-rightmost blank space, the required value is; 752/754 = 0.9973.
Read more on relative frequency;
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Number of apples=12 times numer of bags=12n
neeeds at least 75 apples (1 per student)
12n≥75
divide both sides by 12
n≥6.25
can't buy 0.25 of a bag
7
needs to buy 7 bags
Answer=84 sheets
4.2feet
1 foot=12 inches
4.2*12=<span>50.4inches
50.4/0.6=</span><span>84 sheets</span>