Answer:
Step-by-step explanation:
x=22.5 degrees
The Minimum sample size table is attached below
Answer:

Step-by-step explanation:
From the question we are told that:
Confidence Interval 
Variance 
Generally going through the table the
Minimum sample size is

I think it is in three(3) day
Answer:
I can't see the ques
Step-by-step explanation:
Can u please post it again