Question

if expenses are 45.00 standard deviation of 16.00 what percent would fall between 38.60 and 57.80​

Answer 1

Answer:

Z score = (reading - 45)/ 16  

so Z score for 38.60 >>>> Z = (38.60 - 45)/16 = -0.4923  

Z score for 57.80>>>>>>>Z = (57.80 - 45)/16 = 12.80/16 = + 0.8  

Now consult a Table of Z values to get the answers.  

All values in the table are positive. Your first Z score is negative but the negative sign only tells you that your reading is less than the average.

Explanation:

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