Answer:The precision of an estimator does not depend on the size of the sample.
Step-by-step explanation: its really is not that hard just find the one you don't think is the right answer
Answer:

Step-by-step explanation:
we know that
The dilation is a non-rigid transformation that produces similar figures
If two figures are similar, then the ratio of its corresponding sides is proportional and this ratio is called the scale factor
step 1
Find the scale factor
Let
z ----> the scale factor
----> ratio of corresponding sides
simplify

step 2
Find the length of the enlarged design (L)
Multiply the length of the original design by the scale factor
so

Convert to mixed number

Remember: √-1=i
√-16=(√16)(√-1)=(i)(√16)=i(4)=4i
1-4i
Hint: take the derivative of the function. then examine how many zeros that function can have, namely the max number of real zeros. that will be your answer.