The search time for a particular search term on Google is defined by the probability density function below, where x = the random variable "time to produce a result in milliseconds".Determine the mean (expected value) of x. 1/5 for values of x between 250 and 255
f(x) =
0 everywhere else
A)25.5
B)252.5
C)253.0
D)225
E)250.5

Question

The search time for a particular search term on Google is defined by the probability density function below, where x = the random variable "time to produce a result in milliseconds".Determine the mean (expected value) of x. 1/5 for values of x between 250 and 255
 f(x) =
0 everywhere else
A)25.5 
B)252.5 
C)253.0 
D)225 
E)250.5

Quizplus · Accepted Answer

The Answer of The search time for a particular search term on Google is defined by the probability density function below, where x = the random variable "time to produce a result in milliseconds".Determine the mean (expected value) of x. 1/5 for values of x between 250 and 255
 f(x) =
0 everywhere else
A)25.5 
B)252.5 
C)253.0 
D)225 
E)250.5

The Search Time for a Particular Search Term on Google