Answer:
0.0007
Step-by-step explanation:
Answer: 95% confidence interval would be (1341.2,1458.8).
Step-by-step explanation:
Since we have given that
n = 64
Average = 1400
Standard deviation = 240
We need to find the 95% confidence interval for SAT scores.
So, z = 1.96
So, Interval would be
Hence, 95% confidence interval would be (1341.2,1458.8).
Answer: Elena is wrong as each file folder is 0.0256 inches.
Step-by-step explanation:
To find out if Elena is correct or not, you need to work out the height of each stack of file such that there will all add up to 5.125 inches.
Assuming all 200 files have the same height, the height of each file folder is:
= Total height of stack / Number of file folders
= 5.125 / 200
= 0.0256 inches
Elena is therefore wrong because the answer Elena gave is too large.
Answer:x=1/9
Step-by-step explanation:
1. subtract 2 from both sides
9x+2-2=3-2
2.simplify
9x=1
3.Divide both sides by 9
9x/9=1/9
4.simplify
x=1/9
Answer:
630 in^2
Step-by-step explanation:
21 x 15 divided by 2 = 157.5
157.5 x 4 = 630
