The process of random sampling guarantees that the sample selected will be representative of the population. Why is this statement not true? What other factors and variables influence the outcomes of studies?

Q: Describe the procedures for obtaining a random sample. step by step

A:

Q: The margin of error increases if the sample size increases. True False

A: Margin of error is given by, MoE= z*sigma/√n  MoE is inversely proportional to n so as we increase…

Q: What are the sample space of the experiment?

A: Here use definition of sample space

Q: When does Random sampling can be very difficult?

A: Simple random sample: In a simple random sample, each unit in the population has the equal chance of…

Q: What is the main advantage of probability sampling over the nonprobability sampling? State three…

A: Given that  advantage of probability sampling over the nonprobability sampling? State three…

Q: What is the size of the sample space when two 10-sided dice are rolled?

A:

Q: Discuss the random sampling and the sampling distribution of the sample average?

A: Simple random sampling: A simple random sample of size n is collected from a large population where…

Q: Explain the Difference between the sample space and random variables?

A: Sample space: The sample space is the collection of all outcomes, if a random experiment is…

Q: A geologist weighs a rock several times on a sensitive scale. Each time, the scale gives a slightly…

A: A geologist weighs a rock several times on a sensitive scale. Each time, the scale gives a slightly…

Q: Random sampling is the best sampling technique because it guarantees that our sample will be…

A: Given: Random sampling is the best sampling technique because it guarantees that our sample will be…

Q: Assume we do a simple random sample, where we have the same number of secondary units. Will cluster…

A: Since in the first case, the number of secondary units is the same, simple random sampling can be…

Q: The best way to determine if a statistical hypothesis is true is to examine a random sample from the…

A: Statistical hypothesis - Statement regarding nature of population * it stated in terms of population…

Q: Explain the three methods of selecting a simple random sample

A: When the sample is selected randomly and every element of the population has an equal chance of…

Q: (a) What would the sampling distribution of the sample mean for a random sample of size n=2 years…

A:

Q: What is Random Sampling?

A: Random sampling: A simple random sample of size n is collected from a large population where each…

Q: What information do you need to decide on a sample size that will provide adequate statistical…

A: Adequate statistical power is the power of probability with the rejected null hypothesis. Generally,…

Q: What is the formula to be used to determine the total possible random samples?

A: Let the population size be N Sample size be n

Q: 2. What is the importance of getting the sample size?

A:

Q: Explain why you should get a much better prediction for μ by using x from a sample size n rather…

A: The confidence interval on mean is given as x-Zα2sdn≤μ≤x-Zα2sdn where  μ=population meanx=sample…

Q: each score in a random sampling distribution represents what

A: We have given that  We have to define each score in a random sampling distribution :

Q: What is the probability of getting a sample mean between 500 and 520 if the population mean is 500…

A: The population mean is 500 and the standard error of the mean is 20.The probability of getting a…

Q: Discuss the basic strategy for comparing the means of two populations based on independent simple…

A: Simple random sample:It is a subset of the population, in which each element in the population…

Q: is a sampling considered biased?

A: We know that The sampling method is called biased when it favors some outcomes over the others…

Q: Define significance of Random sampling?

A:

Q: A stratified random sample can be used to ensure underrepresented populations are represented in a…

A: Stratified random sampling with proportional allocation: Stratified random sampling is a method of…

Q: In order to facilitate independent random sampling what must be utilized?

A: Random sampling is the process of taking sample randomly from the population. Independent random…

Q: The conditions for a sampling distribution of a sample proportion, when you do no know the true…

A: Sampling distribution: A sampling distribution is a statistical probability distribution derived…

Q: . What is the difference between sampling error and sampling bias? Which one is very concerning to…

A: Sampling error is defined as the deviation in the sample values with those of the population. This…

Q: What is the sample size of adults participated in this study?

A: We have to find the sample size for the given situation.

Q: Give me an example of systematic sampling and simple random sample

A: Given : Systematic sampling   Simple random sample

Q: What are thw two requirements for a random sample?

A: In this case, we need to write the two requirements for the random sample.

Q: 2. Explain the systematic random sampling approach and provide an example.

A: Sampling is nothing but the technique of selecting individual members from of the population…

Q: 2. How is sample size adequate to a given population determined? 3. What is the basic difference…

A: Thanks for giving opportunity to serve for bartleby students,   Hey, There ! Thank you for posting…

Q: What are the risks of sampling errors?

A: The errors involved in the collection, processing, and analysis of a data may be classified as:…

Q: what is a sampling error?

A: Description of parameter and statistic:A characteristic that describes population is called a…

Q: When does random sampling occur?

A: It is a sampling technique to choose the desired number of samples from the population. The types of…

Q: What is sample size?

A: In this case, we need to define the sample size.

Q: A survey on customer satisfaction at a bank is carried out by asking everyone who visits the bank on…

A: Sampling methods: In simple random sampling, all the units in the population have equal chance of…

Q: What type of sampling is used?

A:

Q: The shape of a sampling distribution of sample means will always be bell-shaped. True or false?

A: The sampling distribution of the sample means will be normally distributed only when the sample size…

Q: What is a sample in which the sampling units are chosen from the population according to a random…

A:

Q: If a researcher uses random sampling, the sample will definitely be representative of the…

A: Solution: The given statement is “If a researcher uses random sampling, the sample will definitely…

Q: The reason why samples are selected at random is

A: We know that  Random sampling :  Selecting a sample randomly from the population . By selecting…

Q: Discuss the basic strategy for comparing the means of two populations based on a simple random…

A: Explain the basic strategy for comparing the means of the two populations based on a simple random…

Q: What is another kind of sampling error you might see in a poll besides random sampling error?

A: The total error of the survey estimate results from the two types of error.  Sampling error.  Non…

Q: Use Table, to draw a random sample (without replacement) of size 5 from a population of 24 units.

A:

Q: 5.What is the benefit of random selecting single sample from a population

A: Asked about  benefits of random sampling :  Random sampling : Selecting a sample from population in…