Time remaining:
Probability & Stats - Normal Distribution

Statistics
Tutor: None Selected Time limit: 0 Hours

1.The lengths in minutes of feature films for the current year follow a normal distribution with a mean of 109 minutes and standard deviation of 12 minutes. What percentage of feature films in the current year last longer than two hours (120 minutes)

Mar 2nd, 2015

z = (120-109)/12 = 11/12 = 0.92

P ( Z > 0.92) = 0.1788

17.88% or 18% 

Mar 2nd, 2015

Did you know? You can earn $20 for every friend you invite to Studypool!
Click here to
Refer a Friend
...
Mar 2nd, 2015
...
Mar 2nd, 2015
Feb 26th, 2017
check_circle
Mark as Final Answer
check_circle
Unmark as Final Answer
check_circle
Final Answer

Secure Information

Content will be erased after question is completed.

check_circle
Final Answer