Answer:
832
Step-by-step explanation:
standard deviation =228 minute
error =13 minute given
confidence level =905% =0.90
α=1-0.90=0.1

we know that sample size should be greater than




n=832
The answer is C because its the only one that makes sense when you see what the question is asking you
Answer:
A
Step-by-step explanation:
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