SOLUTION: What is the answer to find the probability that her age will fall between 49 and 53. The mean is 50 and the alpha is 5

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Question 956843: What is the answer to find the probability that her age will fall between 49 and 53. The mean is 50 and the alpha is 5
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
I'm assuming you mean sigma (standard deviation) and not alpha.
Find the z scores.
z=%28x-mu%29%2Fsigma
z%5B1%5D=%2849-50%29%2F5
z%5B1%5D=-0.2
z%5B2%5D=%2853-50%29%2F5
z%5B2%5D=0.6
Find the probabilities corresponding the respective z scores.
P%5B1%5D=0.42074
P%5B2%5D=0.72547
So then,
P=P%5B2%5D-P%5B1%5D
P=0.72547-0.42074
P=0.305