SOLUTION: Suppose commuting times to work are normally distributed with mean 25 minutes and standard deviation 6.1 minutes. Find the probability that a randomly selected spends more than 20
Algebra.Com
Question 819871: Suppose commuting times to work are normally distributed with mean 25 minutes and standard deviation 6.1 minutes. Find the probability that a randomly selected spends more than 20 minutes commuting.
A).8190
B).6808
C).1230
D).2440
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Suppose commuting times to work are normally distributed with mean 25 minutes and standard deviation 6.1 minutes. Find the probability that a randomly selected spends more than 20 minutes commuting.
------
z(20) = (20-25)/6.1 = -0.8197
P(x > 20) = P(z > -0.8197) = normalcdf(-0.8197,100) = 0.7938
-------------------
Cheers,
Stan H.
--------------
RELATED QUESTIONS
According to one survey the average travel time for students to go to school is 25... (answered by ikleyn)
calculate commuting time is normally distributed with mean 45 mins per day, and standard... (answered by stanbon)
The average commute to work(one way) is 25.5 minutes according to the 2000 census. If we... (answered by stanbon)
Commute times (amounts of time it takes people to commute from home to work) of people in (answered by Boreal)
PLs hELP!!UrGENT!,,nEED youR cOOperAtion..THANK you>>
#1 problem:
A local medical... (answered by stanbon)
In a large city, the time taken to travel to work is normally distributed with a mean,... (answered by ewatrrr)
more normal distribution that i need help understanding. and learning how to use... (answered by Theo)
Based on information from the US census Bureau, the mean travel time to work in minutes... (answered by ewatrrr)
The mean travel time to work in minutes for all workers in the U.S. is 25.1 minutes. A... (answered by stanbon)