The time required to finish a test is normally distributed with a mean of 60 minutes and a standard deviation of 10 minutes. What is the probability that a student will finish the test in less than 70 minutes?

Question

anonymous · Answer

do you know what z test is ?

anonymous · Answer

@rvc Do you know how to do this?

rvc · Answer

ah
i knew this but now i forgot lol
sorry :(

anonymous · Answer

it might take 10 more mins for a student cause they could be the last one done , or they could have been late ...the reason why a student might take 70 mins cause they are focused or they may have problems it depends ...i just gave u a  reasonable answer

mrnood · Answer

@Ddaddysgirl13 
I think you have missed the point that his is a numeric question with a numeric answer 

@Upinlamecity 

Do oyu know the 68,95,97.5 rule?

What proportion of the |dw:1435322319275:dw|normal distribution curve lies between the mean and +1SD?