Data for Exercise 7.78

Homework

Format

A data frame with 30 observations on two variables

school

type of school either private or public

time

number of hours per week spent on homework

References

Kitchens, L. J. (2003) Basic Statistics and Data Analysis. Pacific Grove, CA: Brooks/Cole, a division of Thomson Learning.

Examples


boxplot(time ~ school, data = Homework, 
        ylab = "Hours per week spent on homework")

#
t.test(time ~ school, data = Homework)
#> 
#> 	Welch Two Sample t-test
#> 
#> data:  time by school
#> t = 1.7134, df = 27.727, p-value = 0.09779
#> alternative hypothesis: true difference in means is not equal to 0
#> 95 percent confidence interval:
#>  -0.5345122  5.9878455
#> sample estimates:
#> mean in group private  mean in group public 
#>              17.63333              14.90667 
#>