In a college there are 2000 students, we draw a simple random sample without replacement of 500 students from the 2000 students. We ask each student in the sample "Do you use laptop? Yes or No", 230 students answer Yes and 270 students answer No. Estimate the number of student in the college who use laptops.

Q: A company uses a computer to identify 600 most loyal customers from his database then service those…

A: A company uses a computer to identify 600 most loyal customers from his database then service those…

Q: A recent graduate chooses 4 continents to visit from the 7 in the world. What is the size of the…

A: A recent graduate chooses 4 continents to visit from the 7 in the world total=7 choose =4

Q: A group of randomly selected members of Mothers' Club were asked how many kids they have. The table…

A: The most reasonable estimate for the number of mothers’ club members who have fewer than 2 kids is…

Q: Pablo randomly picks five marbles from a bag of eleven marbles (six red ones, three green ones, and…

A: According to the combination rule, if r distinct items are to be chosen from n items without…

Q: List all the 21 sample.

A: Data set, 2,5,6,8,10,12,13 Tere are 21 ways to select samples of size 5.

Q: When I am taking a Simple Random Sample, what do I do if say I take 23 samples from a range of 93…

A: The random number table is used to obtain the sample random sample which provides each member of the…

Q: Some middle school teachers have decided that the 8th grade needs a student committee. They need to…

A: Given that  there are total 22 student out of which 5 are selected

Q: Suppose you have 3 red marbles, 2 blue marbles, and 4 yellow marbles in a bag.  What is the sample…

A: Solution: Sample space consists of all the possible outcomes of an experiment. This is denoted by S.…

Q: You wish to take a random sample of 45 students from a population of 120 men and 100  women for the…

A:

Q: A survey of students living in a high-rise residence is to be conducted. The residence has 10…

A: Here it is a two stage sampling because there is randomization in the two stages. First…

Q: If a school has a total of 475 students. We want to extract a sample of 80. How can you explain in…

A: Note: Hey there! Thank you for the question. We have assumed “random sampling” to mean simple random…

Q: A community college employs 86 full-time faculty members. To gain the faculty's opinions about an…

A: The digit at position row 3 and column 6 is 9 and moving downwards we have, 5, 7, and 9. So the…

Q: Think of 5 situations with equally likely events and find the sample space.

A: Events are said to be equally likely if each outcome has equal chance of being occur.

Q: Jean is planning to take a foreign language class. To research how satisfied other students are with…

A: Jean is planning to take a foreign-language class. To research how satisfied other students are with…

Q: A little league baseball organization has 16 teams with 12 players each. 4 teams were randomly…

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: A school bag contains 12 pens of which 5are red and the other are black. 4pens are selected from the…

A: Given, Total Pens= 12 Red pens=5 Black Pens=7 No of samples of size 4 contain at most one black…

Q: Pablo randomly picks four marbles from a bag of nine marbles (five red ones, three green ones, and…

A: Given,no.of red marbles =5no.of green marbles=3no.of yellow marbles=1total n.of marbles =9

Q: A die is rolled and a coin is flipped simultaneously.  The number rolled on the die and whether the…

A: Total possible outcomes for a die rolled = 6 Which is 1,2,3,4,5,6 Total possible outcomes for a…

Q: A political analyst would like to survey a sample of the registered voters in a county. The county…

A: Cluster Sampling : Suppose there are several groups present in the population. In Cluster sampling,…

Q: The notation n(S) stands for the total number of outcomes in the sample space. Using combinations,…

A: It is given that Total number of stocks = 10 Stocks to be selected = 2

Q: researcher decided to study the dietary habits of community college students. She did so in a way to…

A: Solution: The sampling methods can be classified into two types 1) Probability or random sampling…

Q: A political scientist surveys 29 of the current 131 representatives in a state's congress. What is…

A:

Q: A market researcher obtains a sample of 50 people by standing outside a store and asking every 20th…

A: Here the sample size n = 50 A researcher obtains data from every 20th customer.

Q: In an exit poll of 625 scientifically and randomly selected voters, 340 expressed support for…

A: Given data, n=625 x=340 sample proportion(p)=?

Q: A researcher divides 200 students according to their major. Then she randomly selects three majors…

A: The used sampling scheme is that first the students divided into groups then random select 3 groups.

Q: how do you find random sample of 20 "items" from some population or process? And make the table with…

A: To find a random sample of size 20 from a population, we use simple random sampling. The simple…

Q: When the bureau of labor statistics conducts a survey, it begins by partitioning the US adult…

A: A simple random sample is a subset of population in which each unit in the sample has an equal…

Q: ablo randomly picks four marbles from a bag of nine marbles (five red ones, three green ones, and…

A: number of red marbles=5 number of green marbles=3 number of yellow marbles=1   Total number of…

Q: A sample of 70 students from all the three departments of Nizwa College of Technology are selected…

A: Given that  Sample size n = 70 Number of students in Business department, N1 = 80 Number of students…

Q: The secretary in a statistics department would like to estimate how much coffee to brew per day such…

A: From the following data we have to calculate mean, standard, and confidence interval

Q: An insurance company conducted a study to determine the percentage of cardiologist who had been sued…

A: The population is the set of all objects of interest. It is not practically possible to study the…

Q: On election day, a local TV news organization stayed at three polling locations in Fairfield county…

A: Given:  The total number of votes for candidate A in the election for the US Senate seat are n=2790.…

Q: There are 30 boys and 20 girls in a class. If a teacher selects a sample of boys and girls as per…

A: Stratified Random Sampling: The population consists of N units which is divided into k relatively…

Q: The CEO of an airline estimates that 15% of all flights arrive late. How many flights must he…

A: Given Information: Proportion p=0.15 Confidence level = 96% = 0.96 Significance level α=1-0.96=0.04…

Q: A company employs 79 people. Choose a simple random sample of five to survey. a. In the table of…

A: a) From a table of random numbers we get 61424 20419 86546 b) In groups of two it will be,  61 42 42…

Q: Race organizers want to survey the participating runners on the quality of the running course. Which…

A: Systematic random sampling is a type of probability sampling in which the members are selected at…

Q: In a random sample of 100 voters, 52 said they planned on voting for the Republican presidential…

A: Identify the value of the sample proportion. The value of the sample proportion is determined below:…

Q: The city of Raleigh has 9500 registered voters. There are two candidates for the city council in an…

A: The provided information are: Total number of registered voters = 9500 Number of people involved in…

Q: A school board want student input to help decide what playground equipment to replace. Someone…

A:

Q: Canvas generates a random exam by picking 7 questions from a bank of 10 questions. How many…

A: Here 10 Questions  We have to Pick 7 of them for exam

Q: Billy has a bag of 30 marbles. He must choose only 6 marbles to bring for show and tell. What is the…

A: Given: The bag contains 30 marbles. He will choose only 6 marbles to bring for show and tell.

Q: A normal six-sided die is thrown once. ​ ​The number of outcomes in the sample space is

A: Solution

Q: Huck Finn is interested in the average length of catfish in the Mississippi river bordering St.…

A:

Q: Canvas generates a random exam by picking 6 questions from a bank of 9 questions. How many different…

A: Given : Question bank contain 9 questions .  n = 9 Picking 6 question from question bank for…

Q: There are 4327 colleges in a certain country and the number full-time students is 13, 287,563. (a)…

A: (a)"A discrete variable is one that can take on finitely many, or countably infinitely many values",…

Q: Suppose in a random sample of 81 individuals, 35 are considered success. Compute the sample…

A: Given x=35 n=81

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.