Describe the main difference between a dependent and independent t test.

Q: The test statistic is enter your response here.

A:

Q: Please help me figure out the T-Statistic

A: t stat=2.871

Q: (a) Calculate Coefficient of Correlation (b) Determine the Probable Error and interpret the result

A: Given: sample size, n=8 x y 65 67 66 68 67 65 67 68 68 72 69 72 70 69 72 71

Q: Cite three examples of two variables that are positively correlated and three bivariate data that…

A: Solution :          To study the relation between two variable we use correlation technique. There…

Q: Describe about finding t confidence level.

A: Rules for using a t confidence interval as follows: Population standard deviation is unknown and…

Q: Describe what is measured by the estimated standard error in the bottom of the independent-measures…

A: The estimated standard error indicates the expected amount of error between the sample statistic and…

Q: Where do p-values concentrate?

A: Under the null hypothesis H0 about the unknown distribution of the test statistic, the p value is…

Q: The p-value for this test is approximately

A: Here Given for two tail test  Sample size=n=144 Sample mean=x¯=60.8 Standard deviation=s=3.6

Q: What type of test would be ap are different from the average

A: From given data we have : sample size = 25 standard deviation = 5

Q: What is the test statistic t ?

A: Here, the sample size n is 237.

Q: What is meant by normalization of a set of variables?

A: Standard normal distribution: The standard normal distribution is a special case of normal…

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: Distinguish briefly the Parameters and statistics

A: A parameters is a values that describes some aspect of a population . A parameters may be very…

Q: Suppose we want to use systolic blood pressure to predict diastolic blood pressure. The explanatory…

A: Solution

Q: Describe the t test for 2 independent samples.

A: In order to assess whether there is statistical evidence that the related populationmeans are…

Q: Explain the physical significance of auto correlation.

A:

Q: What is the value of the test statistic, F?

A:

Q: A low power of the test is not caused by...

A: Power of test: This will require some general knowledge of the magnitude of the difference that…

Q: Explain the Empirical Rule.

A: To define Empirical rule:

Q: How do you know when to use a z -test vs. t -test?

A: Z-tests are statistical calculations that can be used to compare the means of a sample's population.…

Q: What aspect does the repeated measure test decrease when compared to an independent to test?

A: Given: The repeated measure that results in decreasing the measure test based on comparing with an…

Q: What is the similarities of parameter and statistics

A:

Q: compare the breathing rate before and after breath holding. chose the correct statistical test what…

A: For comparing the breathing rate before and after breath holding , we will be measuring the…

Q: Joe wanted to conduct an experiment where participants were randomly assigned to receive either no…

A: GivenDependent variable = heart rate in beats per minutethe independent variables is amount of…

Q: Compute the correlation coefficient. x6 1 4 7 3 y 2 4 1 7 6 Send data to Excel The correlation…

A: We have given that the discrete data table of two random variable X and Y.   Correlation coefficient…

Q: histogram

A: The distribution table  given is listed below: Class Frequency 30 - 32 3 33 - 34 6 35 - 36…

Q: Explain the meaning of the term hypothesis as used in inferential statistics.

A: Hypothesis testing:         Hypothesis testing was introduced by R.A.Fisher (Ronald Fisher).It is a…

Q: A negative value of the correlation coefficient indicates that the variables are unrelated. O true O…

A: Negative Correlation :  If the  change in the value of one variable results in the change of value…

Q: Distinguish between a parameter and a statistic

A: A parameter is a descriptive measure of a population and a statistic is a descriptive measure of a…

Q: Do you know how to construct quartiles?

A: Quartiles: It is a method of dividing the data into four parts, 0% to 25% of 25% of data is the…

Q: Differediate the

A:

Q: List one general strength of using nonparametric tests?

A: Nonparametric tests are used when there is no type of distribution given and a relationship or…

Q: What are the assumptions for t test for the population correlation coefficient?

A: Correlation: Correlation is the measure of association between two variables in which one variable…

Q: What is Alpha?

A:

Q: What are the requirements to perform a goodness of fit test?

A: The chi-square goodness of fit is mainly used to compare the observed sample distribution with the…

Q: Explain how we use t as an inferential statistic

A: Inferential statistics:The process of making conclusions regarding the population based on the…

Q: explain the use of z-test

A: Solution-: Explain the use of z-test?

Q: What is the error in the regression below O nothing is wrong correlation is strong

A: Introduction: Definition:Correlation Correlation coefficients are used to measure how strong a…

Q: How are linear correlation tests and t-tests similar?

A:

Q: What type of test would best fit this problem?

A: Given

Q: Explain how F-statistic has two types of degrees of freedom?

A: Introduction: Degrees of freedom can be defined as the number of values in an analysis, that can be…

Q: What are the Four Steps to use when working with the t-test ?

A: The Four Steps to use when working with the t-test with p-value approach is given below: Step 1:…

Q: The p-value for this test is

A: Given : n=26 , s=0.06 , σ2=0.003  Our aim is to find the p-value.

Q: State the empirical rule for variables.

A: The empirical rules for variables are as follows:68% of all possible observations lie within one…

Q: What is Non-Parametric test in statistics?

A: In statistics, nonparametric tests are methods of statistical analysis that do not require a…

Q: ers measured how funny people rated a cartoon when they were in one of two groups: holding a pen in…

A: An independent variable is known as the variable that is used to estimate the dependent variable.…

Q: What is the difference between t-statistic and z-score

A:

Q: A Popsicle store at the beach is comparing their monthly revenue with the sunglasses store next…

A: TRUE

Q: What dose the F-statistic and Prob (F-statistic) indacete?

A: The "F value'' and "Prob(F)'' statistics test the overall significance of the regression model.…