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A tennis club has 100 members .Of 5these are adults and the rest are children .A memeber is selected at random.What is the probability tha5t this memeber is a child?
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A sample selected in such a way that each members of the population has an equal probability of being chosen?
That is known as a simple random sample, or SRS.
What is the defining characteristic of a random sample?
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.
What is the probability of picking a student out of 800 students 50 faculty members and 150 adminstrators?
Probability of picking a student is 800 / (800+50+150) = 800 / 1000 = .8.
What is the probability of 6 members of one family being born on a different day of the week?
Births are not distributed uniformly over days of the week: there are fewer births at weekends. However, if you do assume that the distribution is uniform, then the probability is 6!/76 = 5040/117649 = 0.0428
How many teames of 5 can I make with 37 children?
37 ÷ 5 = 7 remainder 2 → You can make 7 teams, but have 2 children left out. However, if you meant you have a pool of 37 children and need to make a team consisting of 5 children from that 37, then how many different teams (or groups) of 5 children you can make then: This is a combination as the order of selection doesn't matter, only which 5 children are chosen. Here you can make: 37 C 5 = 37!/((37-5)!5!) = (37 × 36 × 35 × 34 × 33)/(5 × 4 × 3 × 2 × 1) = 435,897 different teams
A tennis club has 100 members .Of these are adults and the rest are children .A member is selected at random.What is the probability that this member is a child?
1/35
A sample selected in such a way that each members of the population has an equal probability of being chosen?
That is known as a simple random sample, or SRS.
What is the defining characteristic of a random sample?
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.
How the members of government are selected?
They are selected by the national supreme court.
A school debate team has 4 girls and 6 boys. A total of 3 of the team members will be chosen to participate in the district debate. What is the probability that 3 girls and no boys will be selected?
1-30
A band leader randomly selects 2 students out of 80 band members. If you and your brother are both band members what is the probability that you are both selected?
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
A school debate team has 4 girls and 6 boys. A total of 4 of the team members will be chosen to participate in the district debate. What is the probability that 2 girls and 2 boys will be selected?
3-7
A 5-person review committee is composed of reps from two community organizations urban and rural with 18 and 15 members respectively if only 5 selected what is the probability no more than2from urban?
The prob is 0.4095, approx.
Four couples are at a party. Four people of the eight are randomly selected to win a prize. No person can win more than one prize. What is the probability that both members of at least one couple win?
27/35
How many members are selected for jury?
12
How often are members of the executive branch members selected at their position?
they ate a salad
How are members of boards of accountancy selected?
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
