SOLUTION: On the daily run of an express bus, the average number of passengers is 48. The standard deviation is 3. Assume the variable is normally distributed. Find the probability that t

Algebra ->  Probability-and-statistics -> SOLUTION: On the daily run of an express bus, the average number of passengers is 48. The standard deviation is 3. Assume the variable is normally distributed. Find the probability that t      Log On


   



Question 747306: On the daily run of an express bus, the average number of passengers is 48. The
standard deviation is 3. Assume the variable is normally distributed. Find the probability that the bus will have fewer than 42?
more than 48?

Answer by FrankM(1040) About Me  (Show Source):
You can put this solution on YOUR website!
Fewer than 42 - This is two standard deviations away from th mean. About 2.2% fall into this area.
48 is the halfway mark, 50 % will be above.