Answer: The point estimate of the population mean is <u>23</u>. The margin of error for the confidence interval is <u>2</u>.
Step-by-step explanation:
The confidence interval for the mean is of the form is given by :-
![\overline{x}-\text{error}\leq\mu\leq\overline{x}+\text{error}](https://tex.z-dn.net/?f=%5Coverline%7Bx%7D-%5Ctext%7Berror%7D%5Cleq%5Cmu%5Cleq%5Coverline%7Bx%7D%2B%5Ctext%7Berror%7D)
Given : Lower bound:
Upper bound :![\overline{x}+\text{error}= 25](https://tex.z-dn.net/?f=%5Coverline%7Bx%7D%2B%5Ctext%7Berror%7D%3D%2025)
Then ,the sum of lower and upper bound will be :-
![2\overline{x}=21+25=46\\\\\Rightarrow\ \overline{x}=23](https://tex.z-dn.net/?f=2%5Coverline%7Bx%7D%3D21%2B25%3D46%5C%5C%5C%5C%5CRightarrow%5C%20%5Coverline%7Bx%7D%3D23)
Since
![\Rightarrow\ \text{Error}=\overline{x}-21=23-21=2](https://tex.z-dn.net/?f=%5CRightarrow%5C%20%5Ctext%7BError%7D%3D%5Coverline%7Bx%7D-21%3D23-21%3D2)
Hence, The point estimate of the population mean is <u>23</u>. The margin of error for the confidence interval is <u>2</u>.
6x19=114
114-18= 96
So your answer is 19
It is not possible to write the product of 42 with 2 even factors.