# Project #74216 - Inferential Stats(Excel-based)

Data set provided is population.

Create Random Sample of 30 from population.

From population, calculate population mean, standard deviation, and proportion of population with an attribute.  Attribute is up to you.  From sample of 30, calculate sample mean, sample standard deviation, and proportion of sample with attribute.

Construct a 90% and 99% confidence interval for population mean from sample findings.  Construct 95% confidence interval for proportion of population having attribute.  Compare results with true population mean and proportion with attribute.

Select 2 explanatory variables (provided, X1 and X2) to explain changes in dependent variable (Y)

Using Excel perform a multiple regression.  Print regression output, write regression equation, comment on R squared.  Using hypothesis testing, test for 1% significance of the 2 explanatory variables and overall regression.

Discard one of the two explanatory variables and perform a simple linear (OLS) regression.  Print regression output.  Write regression equation, comment on R squared.  Using hypothesis testing, test for 1% significance of explanatory variable and overall regression.  Have results improved?

 Subject Mathematics Due By (Pacific Time) 06/17/2015 03:00 pm
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