The mean mass of 500 kudu at a private game park is 151 kg and the standard deviation is 15kg.  Assume that there is a normal distribution of the masses. (a) Calculate the proportion of kudus that have an average mass between 120 and 155 kg. (b) Calculate the percentage of kudus that have an average mass greater than 185kg.

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The mean mass of 500 kudu at a private game park is 151 kg and the standard deviation is 15kg.  Assume that there is a normal distribution of the masses.

(a) Calculate the proportion of kudus that have an average mass between 120 and 155 kg.

(b) Calculate the percentage of kudus that have an average mass greater than 185kg.

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