Answer:
The sample of farms required should be 550 large.
Step-by-step explanation:
Let the sample =K,
mean=np=100
Standard deviation==500
probability =Z=0.90
from the normal probability formula,
Z=
0.9=
500 X 0.9=K-100
450=K-100
K=450+100=550
Hence, the sample of farms required should be 550 large.
The interest earned by $318 investment is 9/100 x 318= $28.62
The National fruit of India is Mango
5units=50%
1 unit=50/5
=10%
4/5 are the sponge cakes.. Which makes it 4units for the sponge cakes.
4 units= 4x10
=40%