what score will divide 45 of the scores from the bottom 55 r
what score will divide 45% of the scores from the bottom 55% round to nearest whole # if means =75 and standard deviation is =11
 what score will divide 45% of the scores from the bottom 55% round to nearest whole # if means =75 and standard deviation is =11
 what score will divide 45% of the scores from the bottom 55% round to nearest whole # if means =75 and standard deviation is =11
Solution
First, we get the z score from the given left tailed area. As          
           
 Left tailed area =    0.55      
           
 Then, using table or technology,          
           
 z =    0.125661347      
           
 As x = u + z * s,          
           
 where          
           
 u = mean =    75      
 z = the critical z score =    0.125661347      
 s = standard deviation =    11      
           
 Then          
           
 x = critical value =    76.38227482 = 76 [ANSWER]      

