Exercise

# SE method - bootstrap CI for slope

The twins study was used to weigh in on the question of whether IQ is a result of nature (your genes) or nurture (your environment). If IQ was purely a result of nature, what slope would you expect to see in your linear model?

Recall that one way to create a confidence interval for a statistic is to calculate the statistic repeatedly under different bootstrap samples and to find the standard deviation associated with the bootstrapped statistics.

The `twins`

data is already loaded in your workspace.

Instructions

**100 XP**

- As with the previous exercise, use the
`infer`

steps on the`twins`

data to specify a`Foster`

vs.`Biological`

model, generate 1000 bootstrapped replicates, and calculate the slope statistic. - Calculate the confidence interval of
`stat`

as the mean plus or minus two standard deviations.