Two similar cities tried out two programs, P and 0, to reduce absences of studen

Question

Two similar cities tried out two programs, P and 0, to reduce absences of students. They tested the programs with a total of 1600 junior high students. Effect on tobacco usage Students absent less or same Students absent more Program P Program Q 1600 40% of the 1600 students were in program P, and 30% of all the students were absent more. One-fourth of the program Q students were absent more. Given that a student was in program P, what is the probability that the student was absent less or the same? a. b. Given that a student was absent more, what is the probability that the student was in program Q7 c What is the probability that a student was in Program Q or was absent more? d. What is the probability that a student was in Program P and was absent less or the same?

Explanation / Answer

a) 400/640 = 0.625
b) 240/480 = 0.5
c) (960 + 240 )/1600 = 0.75
d) (1120 + 240)/1600 = 0.85

absent less more P 400 240 640 Q 720 240 960 1120 480 1600

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