Answer: 346
Step-by-step explanation:
Given : Margin of error : E= 0.05
Standard deviation : 
Significance level :
Critical value : 
The formula to calculate sample size ( if proportion is known) :-

Hence, the required minimum sample would be 346.
Answer:
1,480
Step-by-step explanation:
89x20=1,780 total snacks
20x15=300 snacks sold
1,780-300=1,480 snacks left
Answer:
Answer D
Step-by-step explanation:
The answer here is D since all of the other ones have at least one option that is perpendicular to segment EF.
Answer:
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