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Probability and Statistics
Project Instructions:- Every student suppose to attempt his or her project independently- Write your Project in Proper way, First Question, then regression code, results and interpretations of both questions respectively.
Question 1: Simple regression model.From table select one dependent and one independent variable.a. Identify the regression line.b. Identify and interpret the y-intercept and the slope of the linear equation in (a)c. Describe the apparent relationship between two variables under consideration.d. Graph a scatterplot for the data.e. Compute coefficient of determination, r2.f. Determine the percentage of variation in the observed values of the response variable explained by the regression, interpret your answer.Note: Do all steps manually as well as use R-codes. Then compare the results.
Question 2: Multiple Regression Model.Use one dependent and other independent variables and perform the followinga) Identify the response variable and explanatory variablesb) Graph the relationship between the response variable and each of explanatory variablesc) Determine the regression equation and interpret the coefficients as well regression equationNote: Do all stepswith the help of R-Codes
What are the independent variables and their levels? What is the dependent variable? State all null hypotheses associated with independent variables and their interaction? Also suggest alternate hypotheses
Search to find any case study related to either one internal or external recruitment. Based on that case identify the advantages and disadvantages of hiring int
At the 0.025 level, is this significantly greater than the 50% that could be expected simply by chance? Determine and interpret the p-value for the test.
If two series of 1000 draws are made at random from this box, what, approximately, is the chance that they produce the same number of black balls?
Estimate u with an approximate 95% confidence interval. Estimate p, the proportion of measurements in the population that are greater than 30, with an approximate 95% confidence interval.
construct charts for individuals using bothnbsptwo-period andnbspthree-period moving ranges for the following
Let pC be the true proportion of Champaign voters who support marijuana legalization and let pU be the true proportion of Urbana voters who support marijuana legalization. (a) Calculate the p-value for the test H0: pU=pC versus H1: pU≠pC.
Joe wants to sell his car. He receives one offer each month and must decide immediately whether to accept the offer. Once rejected, the offer is lost.
a poll of 1200 randomly selected students was conducted and found 58 favor decriminalizing all drug use that is
Use the Earthquake magnitude scale to answer how much energy in joules was released by the 2008 Earthquake in Sichuan China (magnitude 7.9) which killed 68,000 people.
Assume you sell hardware supplies to grocery, drug, and hardware retailers.
The report "New Study Shows Need for Americans to Focus on Securing Online Accounts and Backing up Critical Data" (PRNewswire, October 29, 2009)
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