I have the answer in this picture. But im not sure if this might be really what your asking for.
The caffeine content of a cup of home-brewed coffee is a normally distributed random variable with a mean of 115 mg and a standa
1 answer:
Answer:
115 mg
Step-by-step explanation:
The 50th percentile has a corresponding z-score of z = 0. The z-score, for any given value of caffeine, X, is given by:
Therefore, if z=0, then X must be equal to the mean value of the normal distribution, which is 115 mg. Thus, the 50th percentile value of caffeine content is 115 mg.
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