8055003.4 .......................................
Answer:
approximately Normal with a mean of 3.2 million and a standard deviation of 0.32 million
Step-by-step explanation:
For normal distribution conditions
1) Sample size is greater than 30
2) Population standard deviation is known
3) population is normal distributed
Above any condition given problem if satisfied than it's distribution will approximately normal.
n = 40 > 30
Sample size(n) greater than 30 and population standard deviation is known.
So the distribution will approximately be normal
<em><u>Hope this helps!</u></em>
Answer:
3,717,000
Step-by-step explanation:
The calculation of paperback copies is shown below:-
Let us assume hardback copies is x, so paperback copies will be 9x
now the equation is
35,000 + x + 9x = 448,000
10x = 448,000 - 35,000
10x = 413,000
![= \frac{413,000}{10}](https://tex.z-dn.net/?f=%3D%20%5Cfrac%7B413%2C000%7D%7B10%7D)
= 41,300
Therefore, the paperback copies are
= ![9\times 41,300](https://tex.z-dn.net/?f=9%5Ctimes%2041%2C300)
= 3,717,000
Hence, the paperback copies is 3,717,000
Answer:9.75
Step-by-step explanation: