Problem 160 of 7
Correct normal-model interpretation error z=-2 means value is 2 units below mean.
Using a hint is okay. It just tells the trainer to give you a little more review.
Hidden until you reveal it.
catch z-score, tail direction, empirical-rule, and technology mistakes.
Hidden until you reveal it.
Catch z-score, tail direction, empirical-rule, and technology mistakes.
Enter your answer
Your answer is equivalent to the expected form.
Walkthrough
Full solution stays hidden until you ask for it.
1. Identify whether error is z-score meaning, model appropriateness, or tail setup.
2. Apply the correct normal-model rule.
3. State corrected result or setup.
Use the worked steps, then substitute the final answer back into the original relationship to confirm it satisfies the prompt.
Only giving a new probability.