An experiment value can either represent statistic or parameter
The value of the average (mean) weight at birth represents is parameter
<h3>How to determine if the value is statistic or parameter</h3>The mean value is given as:
From the question, we understand that the value represents the average weight at birth of all babies born at hospitals in one state
The keyword "all" means that the value represents parameter
Hence, the value of the average (mean) weight at birth represents is parameter
Read more about statistic and parameter at:
Given:
The pair of expressions in the options.
To find:
The two expressions are equivalent for any value of y.
Solution:
Two expressions are equivalent for any value of y, iff they are equivalent.
Clearly, is not equivalent to
or
. So, options A and B are incorrect.
The expression is not equivalent to
. So, option C is incorrect.
The expression is equivalent to
.
Therefore, the correct option is D.