you think that using a margin of error greater than 5 percent is acceptable when conducting a research study on the poor p

Q: A statistical procedure in determining which hypothesis is more acceptable as true or which…

A: HERE USE basic  hypothesis testing

Q: What does the level of significance r

A: Level of significance: The type I error occurs if “rejecting the null hypothesis if the null…

Q: What is the difference between a one-tailed and two-tailed test within the context of significance…

A: A statistical hypothesis is a statement regarding the parameter of the population. Here using null…

Q: Why should you use ANOVA instead of several t tests to evaluate mean differences when an experiment…

A: T-test: The type of test in inferential statistics helps to find whether there is any difference in…

Q: What happens to the power of a hypothesis test if the sample size is increased without changing the…

A: For a fixed significance level, increasing the sample size increase the power of a hypothesis test.…

Q: A group of researchers are studying the difference in ethical perceptions between male and female…

A: Given: The number of female students who responded no to cheat in order to get a high grade are…

Q: What is discriminatory ability or power in statistics and how can you show it on course assessments?

A: Please find the explanation below. Thank you

Q: Discuss the advantage of the independent sample test compared with the advantage of the one sample…

A: In hypothesis testing we test the hypothesis regarding the population parameter.

Q: Do you think that a margin of error greater than 5% is appropriate when conducting a research?

A: Margin of error helps to understand the confidence level of the research or survey. It is calculated…

Q: What is the effect of having different levels of confidence in estimation of population mean?

A: A confidence interval (C.I.) specifies a set of possible values for a given parameter.

Q: What is the difference between a fixed effect factor and a random effect factor?

A: The fixed effect factor is defined as when data has been gathered from all the levels of the factor…

Q: What are the conclusions of the study?

A: Parametric test is used to determine the mean significance between the sample and population when…

Q: The sample statistic that is unbiased estimator is:

A: Note:Hey there! Thank you for the question. However, you have not posted a complete question.…

Q: Explain why the P-value of a hypothesis test is also referred to as the observed significance level.

A: In this case, one is needed to explain the reason for referring the P-value as the observed…

Q: When is it appropriate to use a one-sample Z test and how is this value similar to a simple z or…

A:

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: What do you think would be the greatest description of a best sample? Why? (Related to random…

A: Random Sampling: In this type of sampling, every unit has an equal probability of getting selected…

Q: Explain Misconceptions about significance testing?

A: Misconceptions about significance testing is, The probability value is defined as the probability…

Q: What is the observed significance level for this test?

A: here given , n= 50  sample mean  =  19.4  sample standard deviation  =  3.1

Q: A of researchers are studying the difference in ethical perceptions between male and group female…

A: Solution: Given information: n1= 50  Sample size of female n2= 50  Sample size of male x1= 48 female…

Q: What is the statistical inference? How to conduct a comparative experiment?

A: Concept:Statistical inference is a process of drawing inferences using statistical procedure.

Q: How does a small sample size increase the effect of an outlier on the mean in a skewed distribution?…

A: A skewed distribution mean one tail is longer than the other.

Q: What are two reasons that some people in the field believe significance testing should be banned?…

A: Here we want to discuss reasons that some people in the field believe significance testing should be…

Q: Differentiate between sensitivity analysis and scenario analysis.

A: The difference between the two methods is that sensitivity analysics examines the effect of changing…

Q: The instructor thinks that texting will decrease the student’s ability to concentrate. What are the…

A: Claim: The instructor thinks that texting will decrease the student’s ability to concentrate.…

Q: use a sample to draw an inference about a population

A: The population is a set of all the possible observations about a specified characteristic of…

Q: Show the difference between two approaches to significance testing?

A: The two approaches to significance testing are p-value approach and critical value approach.

Q: Do a significance test for a specific comparison?

A:

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: What happens to the power of a hypothesis test if the significance level is decreased without…

A: Solution: It is required to mention what happens to the power of a hypothesis test if the…

Q: What is the key role of the hypothesized sampling distribution in hypothesis test?

A: The sampling distribution is the distribution of the statistic. It gives all the possible outcomes…

Q: what was the margin of error for this study?

A: The given confidence interval is,  (34, 66) From the confidence interval, The upper limit is, 66 The…

Q: Explain the analysis plan that describes how to use sample data to accept or reject the null…

A: Step 2 Formulate an Analysis Plan: Describe the tests that will be appropriate to use to check…

Q: What is the best estimate for the standard error of the sampling

A: Given data,Tota no of students n=14795Who said yes for cyberbullied is x=2219Point estimate is…

Q: What is the difference between treatment variability and error variability in factorial Designs?

A: Let us consider the simplest factorial design --> 2 * 2 factorial design. Here, we have two…

Q: Why is it wrong to say that sampling bias is unavoidable?

A: Bias is error. Sampling bias is due to taking a fraction of the population not the entire…

Q: - How do you know if a sample is significant different from the population mean? In other words,…

A: Let μ be the population mean of the sample we are taking and μ0 be the hypothesised population mean…

Q: What is the mean of the sampling distribution of differences between means when the null hypothesis…

A: In case of difference between means the null hypothesis is that there is no difference between two…

Q: Identify the null and alternative hypothesis for this study by filling in the blanks with the…

A:

Q: When would you use a one-way ANOVA test rather than an independent sample t-test

A: T- test  T-test is the method to know whether the two population are statistically different or not.…

Q: Is the attached problem a two sample test for a two sample normal means hypothesis test? Not sure…

A: The given problem is an example of two independent sample t-test. a) H0: Population variances of the…

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

A:

Q: Explain how sample size can influence the outcome of a hypothesis test.

A: Lets take the example that we are doing Hypothesis test for one mean with sample size n : When the…

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: Explain the effect on the margin of error and hence the effect on the accuracy of estimating a…

A: Effect on the margin of error: If the sample size decreases, then the standard error of statistic…

Q: Explain the concept of Measurement Error and Errors-in-Variables Bias with suitable example?

A: Errors are difference between observed value and estimated value .