desmond frabracates a tiny microchip it is squre in shape messuring 7.5 millimeters on each side. draw desmond chip to scale on
the grid below.
1 answer:
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Answer: 18
Step-by-step explanation:
The formula to find the minimum sample size is given by :_
, where = population standard deviation.
z*= critical z-value.
E= Margin of error.
Given :
E= ± 8
We know that critical value corresponding to 99% confidence level = z*=2.576 [Using z-table]
Then, the required sample size would be :
[Round to next integer.]
Hence, the required minimum sample size = 18
Answer:
The correct answer will be "0.756596 m²".
Step-by-step explanation:
The given values are:
The radius of an umbrella,
r = 0.4 m
The height of an umbrella,
h = 0.45 m
As we know,
The lateral surface of an umbrella will be:
⇒
On substituting the values, we get
⇒
⇒
So that the amount of fabric needed will be "0.756596 m²".