1000 female students, with a mean height of 66 inches, and standard deviation of 2. What is the probability of a height between 66 and 70 inches

Question

anonymous · Answer

You have to use the standard Distribution table  with the  z-scores for the normal curve. 

first one is 

66 -66/2 = 0.00

second one is 

70-66/2 = 2.00

so look on the table 

fist one is 0.50

second one is 0.9772

just subtract them

= 0.9772-0.50 = 0.4772

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