Answer:
The correct answer is "664".
Step-by-step explanation:
The given values are:
Margin of error,
E = 5%
i.e.,
= 0.05
Level of confidence,
C = 99%
i.e.,
= 0.99
Level of significance,
α = 0.01
From the z value table,
Critical z = 2.576
As we know,
The required sample size n will be:
= 
On substituting the values, we get
= 
= 
= 
= 
i.e.,
= 
There are 10 mm in 1 cm, so 180 mm is really just 18cm and 60 mm is just 6cm.
so how much area each box's base takes up? 18x6 centimeters, or 108cm.
the shelf is a 65x35 so is 2275 centimeters in available area.
how many times does 108 go into 2275? well, 2275/108, that many would fit in the shelf
60 in total nd there is 20 kids who cant swim so i think 60:20??
Answer:
3
Step-by-step explanation:
63/21 = 3
