a researcher peformed the Mann-Whitney test and found a significant difference between psychologists and sociologists. Without knowing anything else, what does this tell you about the researcher's ultimate conclusions about sampling error versus a relationship in nature?

Q: a. What is the standard error of the mean in men? What is it in women? Assume that the sampling was…

A: n1 = 4620 n2 = 6228 x1 = 3.8 x2 = 2.4 s1 = 6.7 s2 = 4.6

Q: How would you explain the analysis of variance, assuming that your audience has not had a statistics…

A:

Q: Would an experiment design that would be analyzed with a repeated measures ANOVA be superior or…

A: It is good to use a repeated measures ANOVA when the measures are from the same persons at different…

Q: what is the difference between sampling with replacement and without replacement?

A: Sampling with out replacement :  if a sample is drawn from a population and all units in population…

Q: For the independent-measures t statistic, what is the effect of increasing the sample variances?

A: If there is more variance in the sample data , then the difference between the mean of data and data…

Q: 3. For a given level of significance, if the sample size is increased, the power of the test will…

A: Here, when we take large sample size then z value will be increase. Then we will be reject the null…

Q: Illustrates the effect of  significance level on the power of a two-sample t test?

A: Power of a hypothesis test: The probability of not committing a Type II error is called the power of…

Q: Part of conducting a Mann–Whitney test involves ranking all the data from both samples combined.…

A: In this case, we need to explain the way of dealing with ties in ranking.

Q: For a repeated measures study, if the null hypothesis is true, then what value should be obtained…

A: According to the provided information, the null hypothesis is true

Q: What is sample variance?

A: In very simple words, Sample variance means the variability in the sample around its average value.…

Q: Suppose that you want to compare the means of several populations, using independent samples. If…

A:

Q: When resampling data from two independent samples, what is the fundamental difference between…

A: Bootstrapping is basically a method of resampling a single dataset to generate a large number of…

Q: What is statistical inference ? How do you conduct a comparative experiment ?

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

Q: The herpetologist ends up rejecting the null hypothesis. If the actual proportion of ridged…

A: The herpetologist ends up rejecting the null hypothesis. If the actual proportion of ridged…

Q: Discuss what is the relationship between sample size and sampling error?

A:

Q: What is the difference between testing hypothesis on a population and testing hypothesis when…

A: Statistical hypotheses testing:   Hypotheses testing is used to make inferences about the population…

Q: What is the key difference between an independent and a dependent samples t-test?

A: Solution-: What is the key difference between an independent and a dependent samples t-test?

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

A: we explain in the following.

Q: Explain one possible advantage of using a paired sample instead of independent samples.

A: Paired samples, are also known as dependent samples, can be defined as the samples in which natural…

Q: Provide an example (different from the ones considered in this section) of a procedure based on a…

A: A researcher wants to test the effectiveness of the training program conducted for students to…

Q: What is the power of the test in the statistical test?

A: Statistical Test: A statistical test is a tool that helps people make analytic conclusions about a…

Q: Which statistical test should she conduct?

A: We need to identify suitable statistical test for given situation

Q: an independent-samples t test, you will usuall

A: the test statistic for independent-samples t test = μ1-μ2-0combined standard deviation

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: Here are randomly selected data, would anyone mind explaining how would I know what gender is more…

A: Given, For male, Mean = 4.39 Standard deviation = 2.06 Coefficient of variation = 46.95%   For…

Q: What is the sampling distribution of a statistic? Why is it important?

A: Sampling distribution of a statistic:The group of all reliable observation of a statistic for the…

Q: What is the difference between a cluster sample and a stratified sampling

A: There are broadly two types of sampling procedures or methods: one is probability and the other is…

Q: What is the difference between a random sample and a simple random sample

A: The difference between a random sample and a simple random sample is,Random sample:Random sample is…

Q: What does it mean when sample results are not statistically significant?

A: statistically significant: In principle, a statistically significant result (usually a difference)…

Q: In a paired samples t test, explain the logic of difference scores (why do you need to find them to…

A: PAIRED T-TEST: The paired t test is also defined as dependent- t test.  This test is used to test…

Q: what is a sampling error?

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

Q: What is the importance of getting a sample from a population? When and why is it necessary?

A: The population is defined as a large group in which the units involved have the same…

Q: Why do you need to know the sampling distribution of the difference between two sample means in…

A: In this case, we need to find the reason for identifying the sampling distribution of the difference…

Q: Which of the following are sources of sampling error and which are sources of nonsampling error?

A: Sampling errors are the errors that are arises due to fact that samples are taken to infer the…

Q: In a paired samples t test, explain the logic of difference scores (why do you need to find them to…

A: Paired t test:The paired t test is also defined as dependent- t test. It is used to test the mean…

Q: What statistical methods are typically used in an inferential study?

A: There are two major parts in Inferential statistics, i. Estimation ii. Hypothesis Testing So, these…

Q: When testing for the difference between the means of two dependent samples, the sample sizes are…

A: We have to find given statement is true or false.

Q: Twenty years ago, 52% of parents of children in high school felt it was a serious problem that high…

A: Given: Hypothesized population proportion(p0)=0.52Number of parents in survey(n)=800Total parents…

Q: How does an observed sample mean qualify as a rare outcome?

A:

Q: It is claimed that the mean household size in the River Terrace neighbourhood is 3.5 persons. A…

A: Test is that whether the mean household size in the River Terrace neighbourhood is 3.5.

Q: What is the standard error of the sample mean if your sample size is 36? Give your answer to 2…

A: It is given that  Population standard deviation, σ = 4.8 Sample mean, x̅ = 25.9 Sample standard…

Q: It is important to have a random sample to prevent data manipulation. O True False

A: This question can be solved by applying the concepts of random sampling.

Q: Suppose that you want to compare the means of several treatments in a randomized block ANOVA. If…

A: Solution: Friedman test: As known to apply the Friedman test first we rank the observations within…

Q: Discuss the basic strategy for performing a hypothesis test to compare the means of two populations,…

A: In two sample t test, there are two independent large samples taken from two different populations.

Q: Traditional statistics (means, variances, and hypothesis tests) are not used to evaluate the results…

A: The traditional statistics are used to evaluate the result means we use the critical values to make…

Q: What does the SEM value tell us about the magnitude of sampling error?

A: Introduction: Suppose a random sample of size n is taken from a population with mean μ and standard…