Answer:
The 99% confidence interval is
Step-by-step explanation:
From the question we are told that
The sample size is n = 100
The sample mean is 
The population standard deviation is
From the question we are told the confidence level is 99% , hence the level of significance is
=>
Generally from the normal distribution table the critical value of
is
Generally the margin of error is mathematically represented as

=>
Generally 95% confidence interval is mathematically represented as
=>
=>
Follow PEMDAS
22 x 12 = 264
11 + 5 = 16
264 + 16 = 280
280 - 10 = 270
270 is your answer
hope this helps
Answer:
A
Step-by-step explanation:



Answer:
5x
Step-by-step explanation:
have a good day! :)
<h2 /><h2>She should find the square root, of 144 sq ft, which is 12 ft</h2><h2 /><h2>Hope that helps!</h2>