Answer:
a) The required sample size n= 55011,57025
b) The sample size is not practical, because that size is extremely large and would be very costly to collect, normally the size have to be significant but no to large to avoid cost unnecessary
Step-by-step explanation:
Range
⇒ 0,99
Sample size can be determinate using equation:
Using confidence level desired 99% 
= 2,58
Table used :
<em>Confidence 
</em>
<em> 90 % 1,60</em>
<em> 95 % 1,96</em>
<em> </em><em> 99 % 2,58</em>
<em> 99,9 % 3,291</em>
So replacing:
It hard for me too but I think I got it
Answer:
They are, because similarity means that the ratio of the sides are equal and they are proportionate.
Step-by-step explanation:
If you look at the graph, you can count 2 units from the smaller diamond/rhombus to the other diamond/rhombus. If you count the amount of units on each side, you will find that they are not equal, however they should be proportional if you calculate the angles of 90°.
Cancel out the 2 with 8 in the denominator giveing you 4.
so, 3/4 * 1/7 = (3*1)/(7*4) = 3/28
