SOLUTION: Please help me solve the following problem: Weights of NUST male students have a distribution that can be approximated by a normal curve with a mean of 65kg and a standard deviatio

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Question 1088414: Please help me solve the following problem: Weights of NUST male students have a distribution that can be approximated by a normal curve with a mean of 65kg and a standard deviation equal to 8kg. what proportion of these are between 65 and 70?
A. 23.57
B. 50
C. 23.52
D. 26.43
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Calculate the z scores.
Then get the probabilities from the z scores and subtract to get the percentage in the range.
z%5B1%5D=%2865-65%29%2F8=0
z%5B2%5D=%2870-65%29%2F8=5%2F8=0.625
P%28z=0%29=0.5
Find P(0.625).
So then the answer is,
X=%28P%280.625%29-0.5%29%2A100