Professor Piraneo has three classes with 80 students total. He created a distribution for mid-term scores as follows Score No. of students 90 -100 12 80 -89 30 70 -79 14 60 -69 16 0 -59 8 Suppose that a student of Professor Piraneo is selected at random. Let F= the event the student scores under 60 G= the event the student scored in the 60s Have the answer of these H= the event the student scored in the 70s I= the event the student scored under 80 a) Use the table and the f/N rule to find P(I) b) Express the event I in terms of F, G, and H c) Determine P(F), P(G), and P(H) d) Compute P(I), using the special addition rule and your answers from parts (b) and (c). Compare your answer to that in part (a).
) Professor Piraneo has three classes with 80 students total. He created a distribution for mid-term scores as follows
Score No. of students
90 -100 12
80 -89 30
70 -79 14
60 -69 16
0 -59 8
Suppose that a student of Professor Piraneo is selected at random. Let
F= the
G= the event the student scored in the 60s Have the answer of these
H= the event the student scored in the 70s
I= the event the student scored under 80
- a) Use the table and the f/N rule to find P(I)
- b) Express the event I in terms of F, G, and H
- c) Determine P(F), P(G), and P(H)
- d) Compute P(I), using the special
addition rule and your answers from parts (b) and (c).
Compare your answer to that in part (a).
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