1-30
3-7
1/3160 The chances of you being the first one selected and then your friend the second are: (1/80)x(1/79)= 1/6320 (once your are selected there are only 79 students left - your friend among the 79) Likewise the chance of your friend being selected first and you second are also 1/6320 Since it doesn't matter which one of you gets chosen first the probability is the sum of those two probabilities, i.e. 2/6320 = 1/3160
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The probability that there are 1,2,3 or 4 men is 1-(the probability that no men are selected). First we select the first person. The probability that this person is a woman is 5/10=1/2. For second person it is 4/9, then 3/8 and finally 2/7. We multiply these together: (1*4*3*2)/(2*9*8*7)=24/1008. This is the probability that every single person in the committee is a woman. One minus that probability is 984/1008=41/42 which is 97.619% Read more >> Options >> http://www.answers.com?initiator=FFANS
100% or each one of them.
3-7
They are selected by county supervisors and the district election board.
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That is known as a simple random sample, or SRS.
Each member of the population has the same probability of being in the sample as any other. Equivalently, any set of members of the given sample size has the same probability of being selected as any other set.
They are selected by the national supreme court.
1/3160 The chances of you being the first one selected and then your friend the second are: (1/80)x(1/79)= 1/6320 (once your are selected there are only 79 students left - your friend among the 79) Likewise the chance of your friend being selected first and you second are also 1/6320 Since it doesn't matter which one of you gets chosen first the probability is the sum of those two probabilities, i.e. 2/6320 = 1/3160
The prob is 0.4095, approx.
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12
they ate a salad
Typically members of a board of accountancy are appointed by a state's governor and include both licensed CPAs and public members. The CPA members are often selected by the governor after consulting with the state's CPA society