A statistics professor plans classes so carefully that the l

A statistics professor plans classes so carefully that the lengths of her classes are uniformly distributed between 47.0 and 57.0 minutes. Find the probability that a given class period runs between 51.25 and 51.75 minutes. find the probability of selected a class that runs between 51.25 and 51.75

Solution

Note that here,          
          
a = lower fence of the distribution =    47      
b = upper fence of the distribution =    57      
          
  
          
Thus, the area between the said numbers is          
          
c = lower number =    51.25      
d = higher number =    51.75      
          
Thus, the probability between these two values is          
          
P = (d - c)/(b - a) =    0.05   [ANSWER]

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