Test scores for students who failed developmental mathematics in the fall semester 1995
Data for Exercise 6.47
Devmath
A data frame/tibble with 40 observations on one variable
first exam score
Data provided by Dr. Anita Kitchens.
Kitchens, L. J. (2003) Basic Statistics and Data Analysis. Pacific Grove, CA: Brooks/Cole, a division of Thomson Learning.
EDA(Devmath$score) t.test(Devmath$score, mu = 80, alternative = "less")
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