Posted by **Anonymous** on Monday, January 14, 2013 at 6:26pm.

Linear Regression

In the babies.dta full dataset, generate a covariate called painind defined as 1 if the infant experienced severe pain upon receiving the shot (pain0 = 7) and as 0 otherwise. In Stata, you can use the commands:

generate painind = 0

replace painind = 1 if pain0 == 7

Fit a linear regression model with total cry time as the outcome; and with group and painind (the severe pain indicator) as covariates. The regression model is:

where .

1. Using the notation from the model above, what are your estimates of the regression coefficients and residual standard deviation?

2. Using the fitted regression model, estimate the average change in cry time for infants with severe pain versus those without severe pain, holding group constant. Provide a 95% confidence interval for this estimate.

Estimate:

unanswered

95% Confidence interval Lower Bound:

unanswered

95% Confidence interval Upper Bound:

- statistics -
**asif**, Saturday, January 19, 2013 at 2:17am
42.38

0.0035 - 0.045

## Answer This Question

## Related Questions

- statistics - • Linear Regression In the babies.dta full dataset, generate a ...
- Biostatistics - Hi, I have answered some questions for some homework and I've ...
- statistics - • Two-sample Non-parametric Test Now, we examine the relationship ...
- statistics - Using the fitted regression model, estimate the average change in ...
- statistics - Using the fitted regression model, estimate the average change in ...
- maths - Using the fitted regression model, estimate the average change in cry ...
- statistics - An obstetrician maintains that preterm babies (gestation less than ...
- Stats. - An obstetrician maintains that preterm babies (gestation less than 37 ...
- statistics - a sales manager used linear regression to find the positive linear ...
- Statistics - The following linear equation, y = b0 + b1x, is a regression line ...

More Related Questions