A random variable follows a normal distribution with mean and standard deviation . What is the -score corresponding to ?

Answer and explanation

Correct answer: C.

  1. Step 1: The -score formula is .
  2. Step 2: Substitute given values: .
  3. Step 3: Calculate numerator: .
  4. Step 4: Divide: .
Answer
.
Why not the others: '' calculates ; '' calculates ; '' is the raw difference without dividing by .

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