Answer:
√
30
/5
, −
√
30
/5
Step-by-step explanation:
Answer: The point estimate of the population mean is <u>25</u>.
The margin of error for the confidence interval is <u>3</u> .
Step-by-step explanation:
The confidence interval for population mean is given by :-
, here
is the point estimate of the population mean and E is the margin of error .
As per given , we have
Lower bound of CI =
(1)
Upper bound of CI =
(2)
Add (1) and (2) , we get

Subtract (1) from (2) , we get

Hence, the point estimate of the population mean is <u>25</u>.
The margin of error for the confidence interval is <u>3</u> .
Answer:
The selling price is 3/2 of the original price
Step-by-step explanation:
<span>You could set up the relation as a table of ordered pairs. Then, test to see if each element in the domain is matched with exactly one element in the range. If so, you have a function! Watch this tutorial to see how you can determine if a relation is a function.</span>
X = -3/2 and is first degree