Normal Distribution?

y_p28

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Oct 24, 2015
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Penicillin is grown in a broth whose sugar content must be carefully controlled. The optimum sugar concentration is 4.9 mg/mL. If the concentration exceeds 6.0 mg/mL, the fungus dies and the process must be shut down for the day. If the sugar concentration is batches of broth is normally distributed with mean 4.9 mg/mL and standard deviation 0.6 mg/mL, what is the probability that the probability that the process will shut down?
I got an answer of 0.0336
What I am stuck on is the following question of what is the probabilty that the sugar content will be between 4.5 and 5.5 mg/mL?
 
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