Comment on the sample size used in this study. Specifically, is the sample unnecessarily large? Is it too small? Explain your reasoning

Q: What is the mean of the sampling distribution of sample means? (Please enter an exact answer.)

A: According to the central limit theorem, if the sample size is sufficiently large, i.e., the sample…

Q: what is atypical sample

A: Atypical sample means something Unusual

Q: Explain how bias and variability can be controlled in sampling.

A: Sampling is an important aspect of statistical analysis, and it is essential to control bias and…

Q: Define random sample. Explain why this is important in design of experiments.

A: A random sample is a sample that is obtained by selecting the sample points randomly without any…

Q: When the sample size is 15 and you are doing a t test, the number of degrees of freedom is 15. True…

A: Given that  Sample size n =15 Degree of freedom =df =n-1

Q: To obtain a smaller margin of error: choose a larger sample size. choose a smaller sample size.

A: The objective is to choose the correct answer for obtaining a smaller margin of error.

Q: Does the sample size ? affect the mean of all possible sample means? Explain your answer.

A: According to central limit theorem, for large sample (>30) or if the population follows normal…

Q: Why is a sample often a better way to obtain information about a population than a census? A. A…

A: Census:- In census,we collect our survey data from entire population.   Sample :- In sample ,we…

Q: A shareholders group is lodging a protest against your company. The shareholders group claimed that…

A: Test - stats (t) = x¯-μsn

Q: illustrates the effect of sample size on the power of a two-sample t test?

A: A test of hypothesis consists of 2 hypotheses: the null, H0, and the alternative, H1.   For a sample…

Q: level of significance and sample size

A: Level of significance: It is the probability of rejecting H0 when H0 is true. Sample size: it is…

Q: Provide a general understanding of standard error. Why does it matter? How does this relate to…

A:

Q: 7. Sample Reliability. Although Nielsen surveys only a few thousand households out of the millions…

A: We have to answer questions related to sampling.

Q: Find the sample variance Given sample 20,13,4,8,10

A: The given sample is 20,13,4,8,10

Q: 2. Sampling Error. What iS a sampling error? How does it differ from other sources of error? In…

A: Sampling Error :  Sampling error is the deviation between the sample statistic(estimator) and the…

Q: What type of sampling is used? We randomly select one of the 4 sections of statistics and interview…

A:

Q: Explain in your own words: What is sampling error? What is a representative random sample?

A: we explain in the following.

Q: What is the difference between the computational formula and the defining formula of a sample…

A: It is an important part of statistics. It is widely used.

Q: Effect of sample size on the sampling distribution. You are planning a study and are considering…

A: The sample size and sampling distribution are two integrally associated concepts in statistics.

Q: Pooling (i.e. combining) two cross sectional datasets leads to an increase in sample size. True…

A:

Q: 1. Sampling Distribution. Distinguish between a distribution of sample means and a distribution of…

A: We know that- According to the central limit theorem, if the sample size is greater than 30 then the…

Q: If the sample size is increased, the margin of error will decrease.   True or False

A: Given statement : " If the sample size is increased, the margin of error will decrease "

Q: What is a sampling distribution of means? Use your knowledge of the standard error of the sample…

A:

Q: One way to minimize unanticipated measurement error from poorly worded or confusing questions in a…

A: Convenience sample: It is a non-probability sampling method, in which researcher selects samples…