The heights dataset from the dslabs package (available from CRAN) contains self-reported heights (in inches) for male and female students from three Harvard Biostatistics classes:

    

# install.packages("dslabs") if needed library(dslabs) data(heights) head(heights)

      

## sex height ## 1 Male 75 ## 2 Male 70 ## 3 Male 68 ## 4 Male 74 ## 5 Male 61 ## 6 Female 65

  

For simplicity, round heights to the nearest inch:

    

heights$height 0.5. What is the maximum height for which you predict a person is female?