1.Your club has 20 members. You are in charge of producing a committee of four m
ID: 1168790 • Letter: 1
Question
1.Your club has 20 members. You are in charge of producing a committee of four members. How many different committees are possible?
2.At the end of the spring semester, a student mentioned that her family knew they would take their vacation in the upper Midwest and the main activity would be bicycling (B) or hiking (H). The family was 50% sure that the vacation would be in Wisconsin (WI), and 20% sure that the vacation would be in Michigan (MI). If the vacation was in Wisconsin, there was a 40% chance that the main activity would be bicycling. If the vacation was in Minnesota, there was a 50% chance that the main activity would be bicycling. If the vacation was in Michigan, there was a 10% chance that the main activity would be bicycling. Assume the vacation will be in only one state. Complete the chart below. Hint, it would help to draw a decision tree.
P(WI)
P(B | WI)
P(H | WI)
P(B & WI)
P(H & WI)
P(MN)
P(B | MN)
P(H | MN)
P(B & MN)
P(H & MN)
P(MI)
P(B | MI)
P(H | MI)
P(B & MI)
P(H & MI)
P(B)
P(WI | B)
P(MI | B)
P(MN | B)
P(H)
P(WI | H)
P(MI | H)
P(MN | H)
P(WI)
P(B | WI)
P(H | WI)
P(B & WI)
P(H & WI)
P(MN)
P(B | MN)
P(H | MN)
P(B & MN)
P(H & MN)
P(MI)
P(B | MI)
P(H | MI)
P(B & MI)
P(H & MI)
P(B)
P(WI | B)
P(MI | B)
P(MN | B)
P(H)
P(WI | H)
P(MI | H)
P(MN | H)
Explanation / Answer
Different possible committees = 20^4 = 160000
P(B I WI) P(H I WI) P(B & WI) P(H & WI) P(WI) 0.5 0.4 0.6 0.2 0.3 P(B I MN) P(H I MN) P(B & MN) P(H & MN) P(MN) 0.3 0.5 0.5 0.15 0.15 P(B I MI) P(H I MI) P(B & MI) P(H & MI) P(MI) 0.2 0.1 0.9 0.02 0.18 P(WI I B) P(MN I B) P(WI I B) P(B) 0.02 0.5 0.3 0.2 P(H) 0.27 0.5 0.3 0.2Related Questions
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