Answer: 191
Step-by-step explanation:
Formula to find the minimum sample size required to estimate a population proportion or percentage:

, where
= proportion estimated by prior study.
E= Margin of error.
z* = Critical z-value.
Given : Confidence level = 95%
Critical value for 95% confidence = z*=1.96

E= 7%= 0.07
Then, 


Hence, the minimum sample size required=191
Answer:
Quadratic polynomial is x^2 - x - 20
Answer:

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Answer:
64,0000
Step-by-step explanation:
Not completely sure what you mean by simplified but her is the answer when the two numbers are multiplied.