deb has a board that measures 5 feet in length how many 1/4 foot long pieces can deb cut from the board?
2 answers:
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Alright so
Surface area = (width x height) + (length x width) + (length x height) + (length x side)
Surface area = (width x height) + (length x width) + (length x height) + (length x side)
Answer: 271
Step-by-step explanation:
The formula we use to find the sample size is given by :-
, where is the two-tailed z-value for significance level of
p = prior estimation of the proportion
E = Margin of error.
If prior estimation of the proportion is unknown, then we take p= 0.5 , the formula becomes
Given : Margin of error : E= 0.05
Confidence level = 90%
Significance level
Using z-value table , Two-tailed z-value for significance level of
Then, the required sample size would be :
Simplify,
Hence, the required minimum sample size =271