# practex2 - STA 2023, SECTION 1080 2nd EXAM NAME: _ SHOW...

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STA 2023, SECTION 1080 2nd EXAM NAME: __________________________________ SHOW YOUR WORK AND REASONING ON ALL PROBLEMS 1. A woman is applying to law schools. She believes that she has a 35% chance of acceptance at each school to which she applies. She also believes that the acceptance (or not) at the different schools are independent events. (a). What is the probability that she is accepted at both of her top two choices of law schools? (5 pts.) (b). If she applies to five total law schools, what is the probability she is accepted in two or more of these five? (6 pts.) 1

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2. (a). If X is binomial (n = 5, p = .8), evaluate P (X = 3). (Show the evaluation computations) (3 pts.) (b) State the multiplication rule of probabilities for events A and B (the general rule). (2 pts.) (c) If P(A) = .6, P(B= .8) and P(A or B) = .9, what is P(A and B)? (2 pts.) 2
3. The Federal Trade Commission collects complaints from consumers concerning certain manufactured products. The complaints collected concerning a particular appliance were distributed as shown in the table below. Reason for Complaint Electrical Mechanical Appearance Under Warrantee 18% 18% 22% 58% After Warrantee 12% 27%

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## This note was uploaded on 12/15/2011 for the course STA 2023 taught by Professor Ripol during the Spring '08 term at University of Florida.

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practex2 - STA 2023, SECTION 1080 2nd EXAM NAME: _ SHOW...

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