If a school has a total of 475 students. We want to extract a sample of 80. How can you explain in detail how this sample is obtained by random sampling

Q: 2. The population consists of 1,200 people. How will a researcher choose from this population a…

A: It is given that the population consists of 1,200 people and the researcher choose a simple random…

Q: You are interested in knowing the proportion of Stormtroopers who are true clones. How many…

A: We have given that  Margin of error =E=2%=0.02 90% confidence.

Q: Give an example problem for the topic Inference about Two Sample Means with SMALL Sample and solve…

A: We need to create a example problem related to statistical inference about two sample means with…

Q: The Department of Health is conducting random drug testing in a barangay in relation to their age.…

A: Given information: The researcher have to randomly select 10 students. Let the randomly selected 10…

Q: a) 10 samples of different Publishers are on display at an Open Day.                   Visitors are…

A: Total available sample n= 10 Number of samples to be selected r = 4

Q: Suppose you try to conduct a presidential approval poll of 10,000 likely U.S. voters. You know that…

A: Answer:----.                 Date:----9/10/2021

Q: in a simple random sample of 25 companies, 23 have both twitter and facebook accounts. can we…

A:

Q: Is the sample size of survey is multiplied by 25, then by what factor is the margin of error…

A: Solution

Q: According to an almanac, 80% of adult smokers started smoking before turning 18 years old. (a) If…

A: Given Information: 80% of adult smokers started smoking before turning 18 years old. i.e., p=0.80…

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

A:

Q: 1) Decide whether these sampling methods produce a simple random sample of students from a class of…

A: The process of taking out a sample from the population is called sampling. There are different…

Q: According to an​ almanac, 60​% of adult smokers started smoking before turning 18 years old. ​(a) If…

A:

Q: 8% of men in the United States are colorblind. If we construct a sampling distribution based on…

A: Central limit theorem: As the sample size large, the sampling distribution of sample means is normal…

Q: 4) 57% of kids can't wait for spring break. How many kids on average would we need to survey to find…

A: Geometric Distribution: Let us assume there is a sequence of trials, each having two outcomes, say…

Q: XYZ Cable corporation employs 2,500 people. If a random sample of 165 is taken from the entire…

A: given that the XYZ corporation employs 2500 people.  i.e. population size = N = 2500  and the random…

Q: You will be required to select two different sampling methods, each method you will choose a random…

A: For simple random sampling , you can randomly open the book to any page and pick any sentence…

Q: The names of all 152 students in a professor's class are written on identical slips of paper, and…

A: Simple random sample:  Every member and set of members have an equal chance of being included in the…

Q: A teacher at a school obtains a sample of students by selecting a random sample of 20 students from…

A:

Q: According to an almanac, 80% of adult smokers started smoking before turning 18 years old. (a) If…

A: Given that, n=400,p=0.80 (a) The expected number of adult smokers to have started smoking before…

Q: 4. Describe how you collected your sample, do you think your sample is represen Discuss any sources…

A: Given a Pie Chart, we can get easily the proportions of sunfish, bass and carp

Q: From a population of 1000 items, we need to take a sample of 100 items. If we use systematic random…

A:

Q: A TV news reporter says that a proposed constitutional amendment is likely to win approval in the…

A: Part b: Given: Sample size, n = 425                        Sample proportion, p^ = 0.52…

Q: The names of all 50 students in a class are written on identical slips of paper, and the slips are…

A: The sample can be drawn from population in different ways. Some of the basic sampling methods are…

Q: Ms. Scott, the principal of Phoenix High School, was conducting a survey about student's impressions…

A: Cluster sampling: Cluster sampling is defined as a method of sampling in which, at first, the entire…

Q: Scenario: The Department of Health is conducting random drug testing in a barangay in relation to…

A: Hi! Thank you for the question, As per the honor code, we are allowed to answer three sub-parts at a…

Q: If a company employs 3,500 people and if a random sample of 175 of these employees has been taken by…

A:

Q: If you wanted information about a population, it could be impossible to ask everyone. One way to…

A: In the given problem we have to answer, Why might it be important to small subgroups of populations…

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: From a group of 12 students, we want to select a random sample of 4 students to serve on a…

A: From the provided information, Total students in a group = 12 The different ways of selecting r…

Q: From a group of 12 students, we want to select a random sample of 5 students to serve on a…

A: Given n=12 r=5

Q: Continuing the previous question 3 (that uses “Repeated Sampling.xlsm" data file), when the sample…

A: Given Data: n=36 μ = 500 σ = 50   z-value corresponding to 95% CI=1.96

Q: A test of the effectiveness of a new curriculum could begin by dividing an area by school district,…

A: Here we have given the sampling scheme, We have to identify which of the random sampling scheme is…

Q: II. Among 250 employees, of the local office of an international insurance company, 182 are whites,…

A:

Q: According to an almanac, 60% of adult smokers started smoking before turning 18 years old. (a) If…

A: Given : p = 0.60 n = 300

Q: 80​%of adult smokers started smoking before turning 18 years old. ​(a) If 200 adult smokers are…

A: Given that   Percent Adult smokers started smoking before 18 years old  = 80% = 0.80   We know that…

Q: According to an almanac, 80% of adult smokers started smoking before turning 18 years old. (a) If…

A: Solution

Q: To estimate the population mean µ with a 85% error margin of 2.5 units, 10) one has determined that…

A:

Q: Scenario   The Department of Health is conducting random drug testing in a barangay in relation to…

A: We want sample of the students for drug testing in barangay in relation to their age. It would be…

Q: A poll in Canada states that 67% of all respondents favor imposing the death penalty. The poll was…

A: Given that  A poll in Canada states that 67% of all respondents favor imposing the death penalty. P…

Q: Knowing that you need a sample pool of 536 students to ultimately get about 250 students in your…

A: From the given information, total number of students listed in the student directory N = 5000. Total…

Q: A population is divided into several clusters and it has been found that all the items within a…

A: Answer: Stratified sampling. Explanation: In Stratified Sampling, the population is divided into…

Q: Suppose your research is about the female entrepreneurs in the Northern region of Pakistan (Hunza)…

A: Research is to be done on female entrepreneurs in Hunza and a sample has to be collected from the…

Q: The Department of Health is conducting random drug testing in a barangay in relation to their age.…

A: "Since you have posted a question with multiple sub-parts, we will solve first three…

Q: 5. Suppose a strata (stratified random sampling ) represents 10 companies from a population of 100…

A: Given: A strata represents 10 companies from a population of 100 companies. so, rate of 10 companies…

Q: when a single die is thrown, it has 6 outcomes since it has 6 faces. what is the sample space ?

A: Given,A single die is thrown once.

Q: When each member of the population has an equal probability of being chosen, the sampling method is…

A:

Q: Give an example problem for the topic Inference about Two Sample Means with Large Sample and solve…

A: Two Sample Means with Large Sample: The problems consist of two different populations. In such…

Q: A researcher will conduct a study on the economic situation of young people between the ages of…

A: A researcher will conduct a study on the economic situation of young people between the ages of…

Q: In order to conduct an experiment, 5 subjects are randomly selected from a group of 39 subjects. How…

A: Given information- We have given that we have to select 5 subjects from a group of 39 subjects. We…

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.