CHECK MY ANSWERS PLZ AND HELP!!! I WILL MEDAL!

Question

anonymous · Answer

At an intersection, the red light times are normally distributed with a mean time of 3 minutes and a standard deviation of 0.25 minutes. Approximately what percent of red lights last between 2.5 and 3.5 minutes?

 32%

 68%

 95% 

 99.7%

C

anonymous · Answer

You are right!!! :D I hope I helped!!! FAN and MEDAL for more help in any subject! (:

anonymous · Answer

thank you so much i just ned someone else to help me haha i have a couple more!

anonymous · Answer

A car is designed to last an average of 12 years with a standard deviation of 0.8 years. What is the probability that a car will last less than 10 years?

 0.621%

 6.21%

 93.79%

 99.379%

A

anonymous · Answer

No problem hun! And your right again! (: