What is the sensitivity of the test? Explain the meaning of the statistic, in the context of this test.

Q: What statistical analysis correctly analyzes the independent measure ( also known as in between…

A: Here we can say that for independent measures we use t-test for one sample and t-test for two…

Q: What is the probabilty distribution of a statistic is called?

A: Given that, Probability distribution of statistic

Q: What is the difference between reliability and validity, two central terms within statistics?

A: Validity refers to the ability of the instrument/test to measure what it is supposed to measure…

Q: Explain the significance of the mean, variance, and standard deviation for a random variable. Do the…

A: Significance of mean, standard deviation and variance is – Mean: it implies average and the sum of…

Q: What does the F-ratio tell us in between-subjects ANOVA results

A: ANOVA: It stands for Analysis of Variance. It is a statistical technique used to compare more than…

Q: How do you find the Ouartiles and the IQR?

A: Quartiles are values that divide the entire set of data into quarters. The different types of…

Q: What are test specificity and test sensitivity?

A: Specificity and sensitivity are two statistical measures to determine the efficiency of a binary…

Q: nen testing for differences between treatment means, the degrees of freedom for the t-statistic are

A: In ANOVA while testing the difference between the treatment means the degrees of freedom for the…

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: What are his hypothe ses and the test statistic ?

A: Given that Sample size n = 144 Sample mean = 147 Population SD = 100

Q: What are the statistical tools use in descriptive and inferential statistics?

A: Descriptive statistics allow you to characterize your data based on its properties. There are four…

Q: What is the test statistic and P-value?

A: The pooled estimate of p is, p¯=x1+x2n1+n2=106+63750+631=1691381=0.1224 The sample proportion for…

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 aspect does the repeated measure test decrease when compared to an independent t test?

A: Two samples are said to be independent if the sample values selected from one population are not…

Q: How will you differentiate between descriptive statistics and inferential statistics? Describe the…

A: Inferential statistics : It makes generalization for the population from the sample. It means…

Q: What are the three value to indicate variability of a data set How do you determine whether it is…

A: Variability :  It refers to the difference being shown by the data points within a data set, as…

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: 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: What is the test statistic? And what is the P value?

A: Introduction: Here μd is the true mean difference between the actress’s and actor’s ages. That is,…

Q: List the types of Sensitivity Analysis?

A: Sensitivity Analysis deals with finding out the amount by which we can change the input data for the…

Q: Differenciate between statistics and probablity?

A: Probability and statistics are related areas of mathematics which concern themselves with analyzing…

Q: What is typically tested when we do hypothesis tests ?  - significance levels  - sample…

A: population parameters

Q: At 10% level of significance, you fail to reject Ho: Median = Median = Median. The p-value for the…

A: Here Given  Significance Level (α)= 0.1 H0: Median A= Median B= Median C

Q: The varaibility of a statistic is described by

A: The variability means the spread ness of the data set. The best measure of spread ness is standard…

Q: What is the test statistic? What is P-value? Reject or Fail to reject?

A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts.  In case…

Q: A researcher examines differences in marital satisfaction levels between people of differing Genders…

A: The researcher wants to examine the differences in marital satisfaction levels between people of…

Q: What is the relationship between types of error and statistical power?

A:

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 are the similarities and differences of statistical inference of single mean as compared to a…

A: Generally, in the testing of a single population mean the distribution of a particular test for the…

Q: Explain what are the objectives of ANOVA and how it is formulated. What are the underlying…

A: Introduction: The ANOVA or analysis of variance is a parametric method of hypothesis testing,…

Q: Explain why you should use ANOVA instead of several t tests to evaluate mean differences (i.e.…

A: T-test is used to compare the means between two samples, but if there is more than 2 conditions in…

Q: What is the statistical test of this? And please explain? Relationship between Academic Stressors…

A: Given, What is the statistical test of this?  Relationship between Academic Stressors and Learning…

Q: Why can we not know the true score for a test? Explain the formula for understanding observed…

A: A true score is the individual's score on a measure of there was no mistake, which is the primary…

Q: Why is a repeated measures test more powerful than an independent samples test? ( This question…

A: Here we want to discuss Why is a repeated measurestest more powerful than anindependent samples…

Q: Why are confidence intervals important and what do they mean to a study?

A: The confidence interval at 100 (1 – α) % confidence level gives us an interval estimate about the…

Q: Provide an example of a study, including the variables, level of measurement, and hypotheses, for…

A: Inferential statistics is about testing a claim about a population using suitable test statistic.

Q: Explain the population characteristic for using confidence interval?

A: A confidence interval is a set of values that will possibly include an unknown parameter for the…

Q: Explain what is a Hypothesis and how can we apply Hypothesis Testing into the Statistical world, any…

A: Hypothesis testing in real life is as straight forward as anything, just identify any real life or…

Q: How does the duality theory play a central role in a sensitivity analysis?

A: Duality or Duality Theory in linear programming is essentially a theory that develops the…

Q: How do I calculate statistical power in a study that uses repeated measures ANOVA?

A: Explain.... calculate statistical power in a study that uses repeated measures ANOVA.

Q: What is the Standard test statistic?

A: Hypotheses:

Q: What does the word 'quartile' mean?

A: Quartiles are the values that divide a list of numbers into quarters: Put the list of numbers in…

Q: In impact of mobile usage on student's grades, what statistical tool you will recommend to use. Give…

A: Given: Mobile usage  Student's grades

Q: When I’m trying to infer the population mean from a small sample, why do I have to rely on the…

A: Assumptions to use standard normal distribution to estimate population mean:The required conditions…

Q: What is the primary weakness of sensitivityanalysis? What is its primary usefulness?

A: Weaknesses of sensitivity analysis It assumes that changes to variables can be made independently,…