The confidence interval is

. This means that we can be 99% confident that the mean number of books people read lies between 9.15 and 11.85.
To find the confidence interval, we first find the z-score associated with it:
Convert 99% to a decimal: 0.99
Subtract from 1: 1-0.99=0.01
Divide by 2: 0.01/2 = 0.005
Subtract from 1: 1-0.005 = 0.995
Using a z-table (http://www.z-table.com) we see that this is associated with a z-score between 2.57 and 2.58. Since both are equally far from this value we will use 2.575.
We calculate the margin of error using

This means that the confidence interval is

The lower limit is given by 10.5-1.35 = 9.15.
The upper limit is given by 10.5+1.35 = 11.85
Step-by-step explanation:
i could have answer it if you have given the table too!
that's it ....
Answer:
- 5x²-2x+7+2x²+6x-9
- 5x²+2x²-2x+6x+7-9
- 7x²+4x-2
so, 7x²+4x-2 is yr answer.
hope it helps.
<h3>stay safe healthy and happy.</h3>
The volume will decrease.
If everything else remains the same then it will decrease. If other sides were increased proportionally then it would stay the same. It would increase if other sides were enlarged more than the length was shortened.
Answer:
67
Step-by-step explanation:
7x9=63
63+4=67