Answer:
Step-by-step explanation:
10% of 44= 4.4
5% of 4.4=0.22
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Answer:
The interval is : (7.206 , 7.794)
Step-by-step explanation:
The mean is = 7.5
Standard deviation = 3
n = 400
At 95% confidence interval, the z score is 1.96

And 
and 
So, the interval is : (7.206 , 7.794)
Answer:
A = 5000(1 + 0.06/2)(2)(4) = 5000(1.03)(8) = $6333.85.
Step-by-step explanation: