A college professor classifies his students according to their grade point avera
ID: 3256850 • Letter: A
Question
A college professor classifies his students according to their grade point average (GPA) and their class rank. GPA is on a 0.0-4.0 scale, and class rank is defined as the under class (freshmen and sophomores) and the upper class (juniors and seniors). One student is selected at random. The table below provides joint probabilities.
Calculate the probability that the randomly selected student is in the Upper Class. Enter your answer in decimal form and round to your answer to three decimal places.
A college professor classifies his students according to their grade point average (GPA) and their class rank. GPA is on a 0.0-4.0 scale, and class rank is defined as the under class (freshmen and sophomores) and the upper class (juniors and seniors). One student is selected at random. The table below provides joint probabilities.
GPA 2.5 or less Above 2.5 Under Class 0.17 0.29 Upper Class 0.25 ?Calculate the probability that the randomly selected student is in the Upper Class. Enter your answer in decimal form and round to your answer to three decimal places.
Explanation / Answer
probability that the randomly selected student is in the Upper Clas = 1 - probability that the randomly selected student is in the Under Class = 1 - (0.17 + 0.29 ) = 0.54
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