The age of trees in a forest is known to be approximately normal with an average age of 40 years and a standard deviation of 10
years. What is the standardized score for a tree that is 34 years old?
1 answer:
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<u>Given</u>:
The given expression is
We need to determine the equivalent expression.
<u>Option A:</u> -1
Solving the expression, we get;
Simplifying, we get;
Thus, the expression is not equivalent to -1.
Hence, Option A is not the correct answer.
<u>Option B</u>: 29
Solving the expression, we get;
Simplifying, we get;
Thus, the expression is equivalent to 29.
Hence, Option B is the correct answer.
<u>Option C</u>:
Let us rewrite the given expression.
Thus, the expression is equivalent to
Thus, Option C is the correct answer.
<u>Option D</u>:
Rewriting the expression, we get;
Hence, the expression is equivalent not to
Thus, Option D is not the correct answer.
<u>Option E:</u>
Multiplying the terms within the bracket, we get;
Hence, the expression is equivalent to
Thus, Option E is the correct answer.