According to a survey the distribution of graduate science students in doctorate

Question

According to a survey the distribution of graduate science students in doctorate-granting institutions is shown to the right. Frequencies are in thousands A graduate science student who is attending a doctorate-granting institution is selected at random complete parts a through c. a. Determine the probability that the field of the student obtained is psychology. (Round to three decimal places as needed) b. Determine the probability that the field of the student obtained is physical or social science. (Round to three decimal places as needed.) c. Determine the probability that the field of the student obtained is not computer science. (Round to three decimal places as needed.)

Explanation / Answer

Sum of frequencies = 315.7

So,

a) P(psychology) = 45.2 / 315.7 = 0.143

b) P(physical or social science) = (34.3 + 87.1) / 315.7 = 0.385

c) P(Not computer science) = 1 - P(Computer science) = 1 - 43.3 / 315.7 = 0.863

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