Find and Interpret the Area Under a Normal Curve

question 39

Multiple Choice

Find and Interpret the Area under a Normal Curve
-A physical fitness association is including the mile run in its secondary-school fitness test. The time for this event for boys in secondary school is known to possess a normal distribution with a mean of 470 seconds and a standard deviation of 40 seconds. Find the probability that a randomly selected boy in secondary school will take longer than 378 seconds to run the mile.

• A) 0.9893
• B) 0.4893
• C) 0.0107
• D) 0.5107