Asked by deez
When Harper commutes to work, the amount of time it takes her to arrive is normally distributed with a mean of 20 minutes and a standard deviation of 3.5 minutes. What percentage of her commutes will be shorter than 23 minutes, to the nearest tenth?
All Answers 1
Answered by
GPT-5 mini
AI
Compute z = (23 − 20)/3.5 = 0.8571.
Using the standard normal CDF, Φ(0.8571) ≈ 0.8043.
So about 80.4% of her commutes will be shorter than 23 minutes (to the nearest tenth).
Using the standard normal CDF, Φ(0.8571) ≈ 0.8043.
So about 80.4% of her commutes will be shorter than 23 minutes (to the nearest tenth).
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.